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+---
+title: Firefox 1.5 para desenvolvedores
+slug: Mozilla/Firefox/Releases/1.5
+translation_of: Mozilla/Firefox/Releases/1.5
+---
+<div>{{FirefoxSidebar}}</div><p>Based on the <a href="/en-US/docs/Gecko" title="en-US/docs/Gecko">Gecko</a> 1.8 engine, Firefox 1.5 improved its already best in class standards support, and provided new capabilities to enable the next generation of web applications. Firefox 1.5 features improved support for CSS2 and CSS3, APIs for scriptable and programmable 2D graphics through <a href="/en-US/docs/SVG" title="en-US/docs/SVG">SVG</a> 1.1 and <a class="internal" href="/en-US/docs/HTML/Canvas" title="en-US/docs/HTML/Canvas"><code>&lt;canvas&gt;</code></a>, <a href="/en-US/docs/XForms" title="en-US/docs/XForms">XForms</a> and XML events, as well as many DHTML, JavaScript, and DOM enhancements.</p>
+
+<h2 id="Developer_Tools">Developer Tools</h2>
+
+<p>Several tools and browser extensions are available to help developers support Firefox 1.5.</p>
+
+<ul>
+ <li><a href="/en-US/docs/DOM_Inspector" title="en-US/docs/DOM_Inspector">DOM Inspector</a>, a tool that allows developers to inspect and modify documents without having to edit the document directly. DOM Inspector is available as part of the Custom install option in Firefox 1.5 under Developer Tools.</li>
+ <li>JavaScript console, a tool to write and test JavaScript code as well as view JavaScript and CSS errors on a page.</li>
+ <li>View page source, with syntax highlighting and find features.</li>
+ <li><a class="link-https" href="https://addons.mozilla.org/extensions/showlist.php?application=firefox&amp;category=Developer%20Tools">Browser extensions</a> including the <a class="external" href="http://www.joehewitt.com/software/firebug/">FireBug</a>, <a href="/en-US/docs/Web_Developer_Extension_(external)" title="en-US/docs/Web_Developer_Extension_(external)">Web Developer toolbar</a>, <a href="/en-US/docs/Live_HTTP_Headers_(external)" title="en-US/docs/Live_HTTP_Headers_(external)">Live HTTP Headers</a>, <a href="/en-US/docs/HTML_Validator_(external)" title="en-US/docs/HTML_Validator_(external)">HTML Validator</a> and many more.</li>
+</ul>
+
+<p><strong>Note:</strong> Some extensions do not currently support Firefox 1.5, and will be automatically disabled.</p>
+
+<h2 id="Overview">Overview</h2>
+
+<p>Some of the new features in Firefox 1.5:</p>
+
+<h3 id="Web_site_and_application_developers">Web site and application developers</h3>
+
+<dl>
+ <dt><a href="/en-US/docs/SVG_In_HTML_Introduction" title="en-US/docs/SVG_In_HTML_Introduction">SVG In XHTML Introduction</a></dt>
+ <dd>Learn how to use SVG in XHTML pages and how to use JavaScript and CSS to manipulate the picture in the same way you would script regular XHTML. See also <a href="/en-US/docs/SVG_in_Firefox" title="en-US/docs/SVG_in_Firefox">SVG in Firefox</a> to learn about the status and known problems of SVG implementation in Firefox.</dd>
+ <dt><a href="/en-US/docs/HTML/Canvas/Drawing_Graphics_with_Canvas" title="en-US/docs/Drawing_Graphics_with_Canvas">Drawing Graphics with Canvas</a></dt>
+ <dd>Learn about the new <code>&lt;canvas&gt;</code> tag and how to draw graphs and other objects in Firefox.</dd>
+ <dt><a href="/en-US/docs/CSS/Using_CSS_multi-column_layouts" title="en-US/docs/CSS3_Columns">CSS3 Columns</a></dt>
+ <dd>Learn about the new support for automatic multi-column text layout as proposed for <a href="/en-US/docs/CSS/CSS3" title="CSS3">CSS3</a>.</dd>
+ <dt><a href="/en-US/docs/Using_Firefox_1.5_caching" title="en-US/docs/Using_Firefox_1.5_caching">Using Firefox 1.5 caching</a></dt>
+ <dd>Learn about <code>bfcache</code> and how it speeds up back and forward navigation.</dd>
+</dl>
+
+<h3 id="XUL_and_Extension_Developers">XUL and Extension Developers</h3>
+
+<dl>
+ <dt><a href="/en-US/docs/Building_an_Extension" title="en-US/docs/Building_an_Extension">Building an Extension</a></dt>
+ <dd>This tutorial will take you through the steps required to build a very basic extension for Firefox. Also see <a class="external" href="http://kb.mozillazine.org/Getting_started_with_extension_development">another tutorial on MozillaZine knowledge base</a>, which demonstrates the new features of the Extension Manager in 1.5 that make creating a new extension even easier.</dd>
+ <dt><a href="/en-US/docs/XPCNativeWrapper" title="en-US/docs/XPCNativeWrapper">XPCNativeWrapper</a></dt>
+ <dd><code>XPCNativeWrapper</code> is a way to wrap up an object so that it's <a href="/en-US/docs/Safely_accessing_content_DOM_from_chrome" title="en-US/docs/Safely_accessing_content_DOM_from_chrome">safe to access from privileged code</a>. It can be used in all Firefox versions, though the behavior changed somewhat starting with Firefox 1.5 (Gecko 1.8).</dd>
+ <dt><a href="/en-US/docs/Preferences_System" title="en-US/docs/Preferences_System">Preferences System</a></dt>
+ <dd>Learn about the new widgets that allow you to create Options windows easier using less JavaScript code.</dd>
+ <dt><a href="/en-US/docs/International_characters_in_XUL_JavaScript" title="en-US/docs/International_characters_in_XUL_JavaScript">International characters in XUL JavaScript</a></dt>
+ <dd>XUL JavaScript files can now contain non-ASCII characters.</dd>
+ <dt><a href="/en-US/docs/Tree_Widget_Changes" title="en-US/docs/Tree_Widget_Changes">Tree API changes</a></dt>
+ <dd>The interfaces for accessing XUL <code>&lt;tree&gt;</code> elements have changed.</dd>
+ <dt><a href="/en-US/docs/XUL_Changes_for_Firefox_1.5" title="en-US/docs/XUL_Changes_for_Firefox_1.5">XUL Changes for Firefox 1.5</a></dt>
+ <dd>Summary of XUL changes. See also <a href="/en-US/docs/Adapting_XUL_Applications_for_Firefox_1.5" title="en-US/docs/Adapting_XUL_Applications_for_Firefox_1.5">Adapting XUL Applications for Firefox 1.5</a>.</dd>
+</dl>
+
+<h4 id="Networking-related_changes">Networking-related changes</h4>
+
+<ul>
+ <li>Certificate prompts can now be overridden on a per-channel basis. This works by setting an interface requestor as an <a href="/en-US/docs/nsIChannel" title="en-US/docs/nsIChannel">nsIChannel</a>'s notificationCallbacks and giving out an interface for <a href="/en-US/docs/NsIBadCertListener" title="en-US/docs/NsIBadCertListener">nsIBadCertListener</a>.</li>
+ <li>nsIWebBrowserPersist's listeners can now implement <a href="/en-US/docs/XPCOM_Interface_Reference/nsIInterfaceRequestor" title="en-US/docs/nsIInterfaceRequestor">nsIInterfaceRequestor</a>::GetInterface and will get an opportunity to provide all interfaces that channels might ask for, including <a href="/en-US/docs/NsIProgressEventSink" title="en-US/docs/NsIProgressEventSink">nsIProgressEventSink</a> (not too useful, redundant with <a href="/en-US/docs/nsIWebProgressListener" title="en-US/docs/nsIWebProgressListener">nsIWebProgressListener</a>). Useful interfaces here include <a href="/en-US/docs/NsIChannelEventSink" title="en-US/docs/NsIChannelEventSink">nsIChannelEventSink</a> and <a href="/en-US/docs/NsIBadCertListener" title="en-US/docs/NsIBadCertListener">nsIBadCertListener</a>.</li>
+ <li>Extensions or other necko consumers, including XMLHttpRequest, can set a Cookie header explicitly, and necko will not replace it. Stored cookies will be merged with the explicitly set header, in a way that the explicit header will override the stored cookies.</li>
+</ul>
+
+<h2 id="New_End_user_Features">New End user Features</h2>
+
+<h3 id="User_Experience">User Experience</h3>
+
+<ul>
+ <li><strong>Faster browser navigation</strong> with improvements to back and forward button performance.</li>
+ <li><strong>Drag and drop reordering for browser tabs.</strong></li>
+ <li><strong>Answers.com is added to the search engine list</strong> for dictionary lookup.</li>
+ <li><strong>Improvements to product usability</strong> including descriptive error pages, redesigned options menu, RSS discovery, and "Safe Mode" experience.</li>
+ <li><strong>Better accessibility support</strong> including DHTML accessibility.</li>
+ <li><strong>Report a broken Web site wizard</strong> to report Web sites that are not working in Firefox.</li>
+ <li><strong>Better support for Mac OS X</strong> (10.2 and greater) including profile migration from Safari and Mac Internet Explorer.</li>
+</ul>
+
+<h3 id="Security_and_Privacy">Security and Privacy</h3>
+
+<ul>
+ <li><strong>Automated update</strong> to streamline product upgrades. Notification of an update is more prominent, and updates to Firefox may now be half a megabyte or smaller. Updating extensions has also improved.</li>
+ <li><strong>Improvements to popup blocking.</strong></li>
+ <li><strong>Clear Private Data</strong> feature provides an easy way to quickly remove personal data through a menu item or keyboard shortcut.</li>
+</ul>
+
+<h3 id="Support_for_open_Web_standards">Support for open Web standards</h3>
+
+<p>Firefox support for Web standards continues to lead the industry with consistent cross-platform implementations for:</p>
+
+<ul>
+ <li>Hypertext Markup Language (<a href="/en-US/docs/HTML" title="en-US/docs/HTML">HTML</a>) and Extensible Hypertext Markup Language (<a href="/en-US/docs/XHTML" title="en-US/docs/XHTML">XHTML</a>): <a class="external" href="http://www.w3.org/TR/html401/">HTML 4.01</a> and <a class="external" href="http://www.w3.org/TR/xhtml1/">XHTML 1.0/1.1</a></li>
+ <li>Cascading Style Sheets (<a href="/en-US/docs/CSS" title="en-US/docs/CSS">CSS</a>): <a class="external" href="http://www.w3.org/TR/REC-CSS1">CSS Level 1</a>, <a class="external" href="http://www.w3.org/TR/REC-CSS2">CSS Level 2</a> and parts of <a class="external" href="http://www.w3.org/Style/CSS/current-work.html">CSS Level 3</a></li>
+ <li>Document Object Model (<a href="/en-US/docs/DOM" title="en-US/docs/DOM">DOM</a>): <a class="external" href="http://www.w3.org/TR/2000/WD-DOM-Level-1-20000929/">DOM Level 1</a>, <a class="external" href="http://www.w3.org/DOM/DOMTR#dom2">DOM Level 2</a> and parts of <a class="external" href="http://www.w3.org/DOM/DOMTR#dom3">DOM Level 3</a></li>
+ <li>Mathematical Markup Language: <a class="external" href="http://www.w3.org/Math/">MathML Version 2.0</a></li>
+ <li>Extensible Markup Language (<a href="/en-US/docs/XML" title="en-US/docs/XML">XML</a>): <a class="external" href="http://www.w3.org/TR/REC-xml">XML 1.0</a>, <a class="external" href="http://www.w3.org/TR/REC-xml-names/">Namespaces in XML</a>, <a class="external" href="http://www.w3.org/TR/xml-stylesheet/">Associating Style Sheets with XML Documents 1.0</a>, <a class="external" href="http://lists.w3.org/Archives/Public/www-xml-linking-comments/2001AprJun/att-0074/01-NOTE-FIXptr-20010425.htm">Fragment Identifier for XML</a></li>
+ <li>XSL Transformations (<a href="/en-US/docs/XSLT" title="en-US/docs/XSLT">XSLT</a>): <a class="external" href="http://www.w3.org/TR/xslt">XSLT 1.0</a></li>
+ <li>XML Path Language (<a href="/en-US/docs/XPath" title="en-US/docs/XPath">XPath</a>): <a class="external" href="http://www.w3.org/TR/xpath">XPath 1.0</a></li>
+ <li>Resource Description Framework (<a href="/en-US/docs/RDF" title="en-US/docs/RDF">RDF</a>): <a class="external" href="http://www.w3.org/RDF/">RDF</a></li>
+ <li>Simple Object Access Protocol (SOAP): <a class="external" href="http://www.w3.org/TR/SOAP/">SOAP 1.1</a></li>
+ <li><a href="/en-US/docs/JavaScript" title="en-US/docs/JavaScript">JavaScript</a> 1.6, based on <a href="/en-US/docs/ECMAScript" title="en-US/docs/ECMAScript">ECMA-262</a>, revision 3: <a class="external" href="http://www.ecma-international.org/publications/standards/Ecma-262.htm">ECMA-262</a></li>
+</ul>
+
+<p>Firefox 1.5 supports the following data transport protocols (HTTP, FTP, SSL, TLS, and others), multilingual character data (Unicode), graphics (GIF, JPEG, PNG, SVG, and others) and the latest version of the world's most popular scripting language, <a href="/en-US/docs/New_in_JavaScript_1.6" title="en-US/docs/New_in_JavaScript_1.6">JavaScript 1.6</a>.</p>
+
+<h2 id="Changes_since_Firefox_1.0">Changes since Firefox 1.0</h2>
+
+<p>Many changes have been introduced into Firefox since it was first released on November 9, 2004. Firefox has progressed with many new features and bug fixes. A detailed list of changes is available from <a class="external" href="http://www.squarefree.com/burningedge/releases/1.5-comprehensive.html">squarefree.com</a>.</p>
diff --git a/files/pt-br/mozilla/firefox/releases/3/index.html b/files/pt-br/mozilla/firefox/releases/3/index.html
new file mode 100644
index 0000000000..b0552cef09
--- /dev/null
+++ b/files/pt-br/mozilla/firefox/releases/3/index.html
@@ -0,0 +1,273 @@
+---
+title: Firefox 3 for developers
+slug: Mozilla/Firefox/Releases/3
+tags:
+  - Firefox 3
+  - NeedsTranslation
+  - TopicStub
+translation_of: Mozilla/Firefox/Releases/3
+---
+<div>{{FirefoxSidebar}}</div><p>If you're a developer trying to get a handle on all the new features in Firefox 3, this is the perfect place to start. This article provides a list of the new articles covering features added to Firefox 3. While it doesn't necessarily cover every little change, it will help you learn about the major improvements.</p>
+
+<h2 id="New_developer_features_in_Firefox_3" name="New_developer_features_in_Firefox_3">New developer features in Firefox 3</h2>
+
+<h3 id="For_web_site_and_application_developers" name="For_web_site_and_application_developers">For web site and application developers</h3>
+
+<dl>
+ <dt><a href="/en-US/docs/Updating_web_applications_for_Firefox_3" title="en-US/docs/Updating_web_applications_for_Firefox_3">Updating web applications for Firefox 3</a></dt>
+ <dd>Provides information about changes you may need to make to your web site or web application to take advantage of new features in Firefox 3.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Online_and_offline_events" title="en-US/docs/Online_and_offline_events">Online and offline events</a></dt>
+ <dd>Firefox 3 supports WHATWG online and offline events, which let applications and extensions detect whether or not there's an active Internet connection, as well as to detect when the connection goes up and down.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Web-based_protocol_handlers" title="en-US/docs/Web-based_protocol_handlers">Web-based protocol handlers</a></dt>
+ <dd>You can now register web applications as protocol handlers using the <code>navigator.registerProtocolHandler()</code> method.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Drawing_text_using_a_canvas" title="en-US/docs/Drawing_text_using_a_canvas">Drawing text using a canvas</a></dt>
+ <dd>You can now draw text in a canvas using a non-standardized API supported by Firefox 3.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Canvas_tutorial/Transformations#Transforms" title="en-US/docs/Canvas_tutorial/Transformations#Transforms">Transform support for canvas</a></dt>
+ <dd>Firefox now supports the <code>transform()</code> and <code>setTransform()</code> methods on canvases.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Using_microformats" title="en-US/docs/Using_microformats">Using microformats</a></dt>
+ <dd>Firefox now has APIs for working with microformats.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Drag_and_drop_events" title="en-US/docs/Drag_and_drop_events">Drag and drop events</a></dt>
+ <dd>Firefox 3 supports new events that are sent to the source node for a drag operation when the drag begins and ends.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Focus_management_in_HTML" title="en-US/docs/Focus_management_in_HTML">Focus management in HTML</a></dt>
+ <dd>The new HTML 5 <code>activeElement</code> and <code>hasFocus</code> attributes are supported.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Offline_resources_in_Firefox" title="en-US/docs/Offline_resources_in_Firefox">Offline resources in Firefox</a></dt>
+ <dd>Firefox now lets web applications request that resources be cached to allow the application to be used while offline.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/CSS_improvements_in_Firefox_3" title="en-US/docs/CSS_improvements_in_Firefox_3">CSS improvements in Firefox 3</a></dt>
+ <dd>Firefox 3 features a number of improvements in its CSS support.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/DOM_improvements_in_Firefox_3" title="en-US/docs/DOM_improvements_in_Firefox_3">DOM improvements in Firefox 3</a></dt>
+ <dd>Firefox 3 offers a number of new features in Firefox 3's DOM implementation, including support for several Internet Explorer extensions to the DOM.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/New_in_JavaScript_1.8" title="en-US/docs/New_in_JavaScript_1.8">JavaScript 1.8 support</a></dt>
+ <dd>Firefox 3 offers JavaScript 1.8.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/EXSLT" title="en-US/docs/EXSLT">EXSLT support</a></dt>
+ <dd>Firefox 3 provides support for a substantial subset of the <a href="/en-US/docs/EXSLT" title="en-US/docs/EXSLT">EXSLT</a> extensions to <a href="/en-US/docs/XSLT" title="en-US/docs/XSLT">XSLT</a>.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/SVG_improvements_in_Firefox_3" title="en-US/docs/SVG_improvements_in_Firefox_3">SVG improvements in Firefox 3</a></dt>
+ <dd>SVG support in Firefox 3 has been upgraded significantly, with support for over two dozen new filters, several new elements and attributes, and other improvements.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Animated_PNG_graphics" title="en-US/docs/Animated_PNG_graphics">Animated PNG graphics</a></dt>
+ <dd>Firefox 3 supports the animated PNG (APNG) image format.</dd>
+</dl>
+
+<h3 id="For_XUL_and_extension_developers" name="For_XUL_and_extension_developers">For XUL and extension developers</h3>
+
+<h4 id="Notable_changes_and_improvements" name="Notable_changes_and_improvements">Notable changes and improvements</h4>
+
+<dl>
+ <dt><a href="/en-US/docs/Updating_extensions_for_Firefox_3" title="en-US/docs/Updating_extensions_for_Firefox_3">Updating extensions for Firefox 3</a></dt>
+ <dd>Provides a guide to the things you'll need to do to update your extension to work with Firefox 3.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/XUL_improvements_in_Firefox_3" title="en-US/docs/XUL_improvements_in_Firefox_3">XUL improvements in Firefox 3</a></dt>
+ <dd>Firefox 3 offers a number of new XUL elements, including new sliding scales, the date and time pickers, and spin buttons.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Templates_in_Firefox_3" title="en-US/docs/Templates_in_Firefox_3">Templates in Firefox 3</a></dt>
+ <dd>Templates have been significantly improved in Firefox 3. The key improvement allows the use of custom query processors to allow data sources other than RDF to be used.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Extension_Versioning,_Update_and_Compatibility#Securing_Updates" title="en-US/docs/Extension_Versioning,_Update_and_Compatibility#Securing_Updates">Securing updates</a></dt>
+ <dd>In order to provide a more secure add-on upgrade path for users, add-ons are now required to provide a secure method for obtaining updates before they can be installed. Add-ons hosted at <a class="external" href="http://addons.mozilla.org">AMO</a> automatically provide this. Any add-ons installed that do not provide a secure update method when the user upgrades to Firefox 3 will be automatically disabled. Firefox will however continue to check for updates to the extension over the insecure path and attempt to install any update offered (installation will fail if the update also fails to provide a secure update method).</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Places_Developer_Guide" title="en-US/docs/Places_migration_guide">Places migration guide</a></dt>
+ <dd>An article about how to update an existing extension to use the Places API.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Download_Manager_improvements_in_Firefox_3" title="en-US/docs/Download_Manager_improvements_in_Firefox_3">Download Manager improvements in Firefox 3</a></dt>
+ <dd>The Firefox 3 Download Manager features new and improved APIs, including support for multiple progress listeners.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/XPCOM_Interface_Reference/Using_nsILoginManager" title="en-US/docs/Using_nsILoginManager">Using nsILoginManager</a></dt>
+ <dd>The Password Manager has been replaced by the new Login Manager.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/XBL/XBL_1.0_Reference/Elements#binding" title="en-US/docs/XBL/XBL_1.0_Reference/Elements#binding">Embedding XBL bindings</a></dt>
+ <dd>You can now use the <code>data:</code> URL scheme from chrome code to embed XBL bindings directly instead of having them in separate XML files.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Localizing_extension_descriptions" title="en-US/docs/Localizing_extension_descriptions">Localizing extension descriptions</a></dt>
+ <dd>Firefox 3 offers a new method for localizing add-on metadata. This lets the localized details be available as soon as the add-on has been downloaded, as well as when the add-on is disabled.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Localization_and_Plurals" title="en-US/docs/Localization_and_Plurals">Localization and Plurals</a></dt>
+ <dd>Firefox 3 adds the new PluralForm module, which provides tools to aid in correctly pluralizing words in multiple localizations.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Theme_changes_in_Firefox_3" title="en-US/docs/Theme_changes_in_Firefox_3">Theme changes in Firefox 3</a></dt>
+ <dd>Notes and information of use to people who want to create themes for Firefox 3.</dd>
+</dl>
+
+<h4 id="New_components_and_functionality" name="New_components_and_functionality">New components and functionality</h4>
+
+<dl>
+ <dt><a href="/en-US/docs/Toolkit_API/FUEL" title="en-US/docs/FUEL">FUEL Library</a></dt>
+ <dd>FUEL is about making it easier for extension developers to be productive, by minimizing some of the XPCOM formality and adding some "modern" JavaScript ideas.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Places" title="en-US/docs/Places">Places</a></dt>
+ <dd>The history and bookmarks APIs have been completely replaced by the new <a href="/en-US/docs/Places" title="en-US/docs/Places">Places</a> API.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/nsIIdleService" title="en-US/docs/nsIIdleService">Idle service</a></dt>
+ <dd>Firefox 3 offers the new {{Interface("nsIIdleService")}} interface, which lets extensions determine how long it's been since the user last pressed a key or moved their mouse.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/nsIZipWriter" title="en-US/docs/nsIZipWriter">ZIP writer</a></dt>
+ <dd>The new {{Interface("nsIZipWriter")}} interface lets extensions create ZIP archives.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Full_page_zoom" title="en-US/docs/Full_page_zoom">Full page zoom</a></dt>
+ <dd>Firefox 3 improves the user experience by offering full page zoom in addition to text-only zoom.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Interfacing_with_the_XPCOM_cycle_collector" title="en-US/docs/Interfacing_with_the_XPCOM_cycle_collector">Interfacing with the XPCOM cycle collector</a></dt>
+ <dd>XPCOM code can now take advantage of the cycle collector, which helps ensure that unused memory gets released instead of leaking.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/The_Thread_Manager" title="en-US/docs/The_Thread_Manager">The Thread Manager</a></dt>
+ <dd>Firefox 3 provides the new {{Interface("nsIThreadManager")}} interface, along with new interfaces for threads and thread events, which provides a convenient way to create and manage threads in your code.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/JavaScript_code_modules" title="en-US/docs/JavaScript_modules">JavaScript modules</a></dt>
+ <dd>Firefox 3 now offers a new shared code module mechanism that lets you easily create modules in JavaScript that can be loaded by extensions and applications for use, much like shared libraries.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/nsIJSON" title="en-US/docs/nsIJSON">The <code>nsIJSON</code> interface</a></dt>
+ <dd>Firefox 3 offers the new {{Interface("nsIJSON")}} interface, which offers high-performance encoding and decoding of <a href="/en-US/docs/JSON" title="en-US/docs/JSON">JSON</a> strings.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/XPCOM_Interface_Reference/nsIParentalControlsService" title="en-US/docs/nsIParentalControlsService">The nsIParentalControlsService interface</a></dt>
+ <dd>Firefox 3 now supports the Microsoft Windows Vista parental controls feature, and allows code to interact with it.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Using_content_preferences" title="en-US/docs/Using_content_preferences">Using content preferences</a></dt>
+ <dd>Firefox 3 includes a new service for getting and setting arbitrary site-specific preferences that extensions as well as core code can use to keep track of their users' preferences for individual sites.</dd>
+</dl>
+
+<dl>
+ <dt><a href="/en-US/docs/Monitoring_plugins" title="en-US/docs/Monitoring_plugins">Plug-in Monitoring</a></dt>
+ <dd>A new component of the plugin system is now available to measure how long it takes plugins (e.g., Macromedia Flash) to execute their calls.</dd>
+</dl>
+
+<h4 id="Fixed_bugs" name="Fixed_bugs">Fixed bugs</h4>
+
+<dl>
+ <dt><a href="/en-US/docs/Notable_bugs_fixed_in_Firefox_3" title="en-US/docs/Notable_bugs_fixed_in_Firefox_3">Notable bugs fixed in Firefox 3</a></dt>
+ <dd>This article provides information about bugs that have been fixed in Firefox 3.</dd>
+</dl>
+
+<h2 id="New_features_for_end_users" name="New_features_for_end_users">New features for end users</h2>
+
+<h3 id="User_experience" name="User_experience">User experience</h3>
+
+<ul>
+ <li><strong>Easier password management.</strong> An information bar at the top of the browser window now appears to allow you to save passwords after a successful login.</li>
+ <li><strong>Simplified add-on installation.</strong> You can now install extensions from third-party download sites in fewer clicks, thanks to the removal of the add-on download site whitelist.</li>
+ <li><strong>New Download Manager.</strong> The download manager makes it easier to locate your downloaded files.</li>
+ <li><strong>Resumable downloads.</strong> You can now resume downloads after restarting the browser or resetting your network connection.</li>
+ <li><strong>Full page zoom.</strong> From the View menu and using keyboard shortcuts, you can now zoom in and out on the content of entire pages -- this scales not just the text but the layout and images as well.</li>
+ <li><strong>Tab scrolling and quickmenu.</strong> Tabs are easier to locate with the new tab scrolling and tab quickmenu features.</li>
+ <li><strong>Save what you were doing.</strong> Firefox 3 prompts you to see if you'd like to save your current tabs when you exit Firefox.</li>
+ <li><strong>Optimized Open in Tabs behavior.</strong> Opening a folder of bookmarks in tabs now appends the new tabs instead of replacing the existing ones.</li>
+ <li><strong>Easier to resize location and search bars.</strong> You can now easily resize the location and search bars using a simple resize handle between them.</li>
+ <li><strong>Text selection improvements.</strong> You can now select multiple ranges of text using the Control (Command on Macintosh) key. Double-clicking and dragging now selects in "word-by-word" mode. Triple-clicking selects an entire paragraph.</li>
+ <li><strong>Find toolbar.</strong> The Find toolbar now opens with the current selection.</li>
+ <li><strong>Plugin management.</strong> Users can now disable individual plugins in the Add-on Manager.</li>
+ <li><strong>Integration with Windows Vista.</strong> Firefox's menus now display using Vista's native theme.</li>
+ <li><strong>Integration with Mac OS X.</strong> Firefox now supports <a class="external" href="http://growl.info/">Growl</a> for notifications of completed downloads and available updates.</li>
+ <li><strong>Star button.</strong> The new star button in the location bar lets you quickly add a new bookmark with a single click. A second click lets you file and tag your new bookmark.</li>
+ <li><strong>Tags.</strong> You can now associate keywords with your bookmarks to easily sort them by topic.</li>
+ <li><strong>Location bar and auto-complete.</strong> Type the title or tag of a page in the location bar to quickly find the site you were looking for in your history and bookmarks. Favicons, bookmark, and tag indicators help you see where the results are coming from.</li>
+ <li><strong>Smart Bookmarks folder.</strong> Firefox's new Smart Bookmarks folder offers quick access to your recently bookmarked and tagged places, as well as pages you visit frequently.</li>
+ <li><strong>Bookmarks and History Organizer.</strong> The new unified bookmarks and history organizer lets you easily search your history and bookmarks with multiple views and smart folders for saving your frequent searches.</li>
+ <li><strong>Web-based protocol handlers.</strong> Web applications, such as your favorite web mail provider, can now be used instead of desktop applications for handling <code>mailto:</code> links from other sites. Similar support is provided for other protocols as well. (Note that web applications do have to register themselves with Firefox before this will work.)</li>
+ <li><strong>Easy to use Download Actions.</strong> A new Applications preferences pane provides an improved user interface for configuring handlers for various file types and protocol schemes.</li>
+ <li><strong>Improved look and feel.</strong> Graphics and font handling have been improved to make web sites look better on your screen, including sharper text rendering and better support for fonts with ligatures and complex scripts. In addition, Mac and Linux (Gnome) users will find that Firefox feels more like a native application for their platform than ever, with a new, native, look and feel.</li>
+ <li><strong>Color management support.</strong> By setting the <code>gfx.color_management.enabled</code> preference in <code>{{mediawiki.external('about:config')}}</code>, you can ask Firefox to use the color profiles embedded in images to adjust the colors to match your computer's display.</li>
+ <li><strong>Offline support.</strong> Web applications can take advantage of new features to support being used even when you don't have an Internet connection.</li>
+</ul>
+
+<h3 id="Security_and_privacy" name="Security_and_privacy">Security and privacy</h3>
+
+<ul>
+ <li><strong>One-click site information.</strong> Want to know more about the site you're visiting? Click the site's icon in the location bar to see who owns it. Identify information is prominently displayed and easier than ever to understand.</li>
+ <li><strong>Malware protection.</strong> Firefox 3 warns you if you arrive at a web site that is known to install viruses, spyware, trojans, or other dangerous software (known as malware). You can see what the warning looks like by <a class="link-https" href="https://www.mozilla.com/firefox/its-an-attack.html">clicking here</a>.</li>
+ <li><strong>Web forgery protection enhanced.</strong> Now when you visit a page that's suspected of being a forgery, you're shown a special page instead of the contents of the page with a warning. <a class="link-https" href="https://www.mozilla.com/firefox/its-a-trap.html">Click here</a> to see what it looks like.</li>
+ <li><strong>Easier to understand SSL errors.</strong> The errors presented when an invalid SSL certificate is encountered have been clarified to make it easier to understand what the problem is.</li>
+ <li><strong>Out-of-date add-on protection.</strong> Firefox 3 now automatically checks add-on and plugin versions and disables older, insecure versions.</li>
+ <li><strong>Secure add-on updates.</strong> Add-on update security has been improved by disallowing add-ons that use an insecure update mechanism.</li>
+ <li><strong>Anti-virus integration.</strong> Firefox 3 now informs anti-virus software when executable files are downloaded.</li>
+ <li><strong>Windows Vista parental controls support.</strong> Firefox 3 supports the Vista system-wide parental control setting for disabling file downloads.</li>
+</ul>
+
+<h3 id="Performance" name="Performance">Performance</h3>
+
+<ul>
+ <li><strong>Reliability.</strong> Firefox 3 now stores bookmarks, history, cookies, and preferences in a transactionally secure database format. This means your data is protected against loss even if your system crashes.</li>
+ <li><strong>Speed.</strong> Firefox 3 has gotten a performance boost by completely replacing the part of the software that handles drawing to your screen, as well as to how page layout work is handled.</li>
+ <li><strong>Memory use reduced.</strong> Firefox 3 is more memory efficient than ever, with over 300 memory "leak" bugs fixed and new features to help automatically locate and dispose of leaked memory blocks.</li>
+</ul>
+
+<h2 id="See_also" name="See_also">See also</h2>
+
+<div>{{Firefox_for_developers('2')}}</div>
diff --git a/files/pt-br/mozilla/firefox/releases/3/zoom_de_página_inteira/index.html b/files/pt-br/mozilla/firefox/releases/3/zoom_de_página_inteira/index.html
new file mode 100644
index 0000000000..1a22edfb92
--- /dev/null
+++ b/files/pt-br/mozilla/firefox/releases/3/zoom_de_página_inteira/index.html
@@ -0,0 +1,45 @@
+---
+title: Zoom de página inteira
+slug: Mozilla/Firefox/Releases/3/Zoom_de_página_inteira
+tags:
+  - Extensões
+  - Firefox 3
+  - XUL
+translation_of: Mozilla/Firefox/Releases/3/Full_page_zoom
+---
+<div>{{FirefoxSidebar}}</div>
+
+<p>{{ Gecko_minversion_header("1.9") }}</p>
+
+<p>Zoom de página inteira (ou apenas fullzoom) é um novo recurso do <a href="/en/Firefox_3_for_developers" title="en/Firefox_3_for_developers">Firefox 3</a>.</p>
+
+<h3 id="Example_.28XUL:browser.29" name="Example_.28XUL:browser.29">Exemplo (XUL:browser)</h3>
+
+<p><span id="result_box" lang="pt"><span>O exemplo a seguir demonstra o uso da janela atual do navegador.</span> <span>Esse é o uso típico de uma extensão do Firefox.</span></span></p>
+
+<pre>var zoom = ZoomManager.getZoomForBrowser(gBrowser.selectedBrowser);
+ZoomManager.enlarge();
+ZoomManager.setZoomForBrowser(gBrowser.selectedBrowser, ZoomManager.MIN);
+</pre>
+
+<h3 id="Example_.28XUL:iframe.29" name="Example_.28XUL:iframe.29">Exemplo (XUL:iframe)</h3>
+
+<p><span class="short_text" id="result_box" lang="pt"><span>Nota: Isso provavelmente está desatualizado.</span></span></p>
+
+<p><span id="result_box" lang="pt"><span>Você pode usar o recurso fullZoom para um</span></span> <a href="/en/XUL/iframe" title="en/XUL/iframe">XUL:iframe</a> <span id="result_box" lang="pt"><span>também.</span> <span>No entanto, como um iframe não tem uma propriedade  markupDocumentViewer, precisamos obtê-la primeiro:</span></span></p>
+
+<pre>var zoom = 1.5;
+var iframe = document.getElementById("authorFrame");
+var contViewer = iframe.docShell.contentViewer;
+var docViewer = contViewer.QueryInterface(Components.interfaces.nsIMarkupDocumentViewer);
+docViewer.fullZoom = zoom;
+</pre>
+
+<h3 id="References" name="References">References</h3>
+
+<ul>
+ <li><span id="result_box" lang="pt"><span>Extensão de zoom de página por</span></span> Ted Mielczarek <a class="external" href="http://ted.mielczarek.org/code/mozilla/fullpagezoom.xpi">fullpagezoom.xpi</a> <span id="result_box" lang="pt"><span>para os últimos Firefox 3.0 nightlies</span></span></li>
+ <li><a class="link-https" href="https://addons.mozilla.org/en-US/firefox/addon/6489">Glazoom extension</a> por Daniel Glazman para Firefox 3.0</li>
+ <li>O <a class="link-https" href="https://bugzilla.mozilla.org/show_bug.cgi?id=4821">bugzilla bug</a> sobre fullZoom.</li>
+ <li>{{ Interface("nsIMarkupDocumentViewer") }} documentação da interface.</li>
+</ul>
diff --git a/files/pt-br/mozilla/firefox/releases/49/index.html b/files/pt-br/mozilla/firefox/releases/49/index.html
new file mode 100644
index 0000000000..db3869a579
--- /dev/null
+++ b/files/pt-br/mozilla/firefox/releases/49/index.html
@@ -0,0 +1,352 @@
+---
+title: Firefox 49 para desenvolvedores
+slug: Mozilla/Firefox/Releases/49
+translation_of: Mozilla/Firefox/Releases/49
+---
+<div>{{FirefoxSidebar}}</div><p style="margin-bottom: 0cm; line-height: 100%;"><a href="https://www.mozilla.org/firefox/developer/" style="float: right; margin-bottom: 20px; padding: 10px; text-align: center; border-radius: 4px; display: inline-block; background-color: #81BC2E; white-space: nowrap; color: white; text-shadow: 0px 1px 0px rgba(0, 0, 0, 0.25); box-shadow: 0px 1px 0px 0px rgba(0, 0, 0, 0.2), 0px -1px 0px 0px rgba(0, 0, 0, 0.3) inset;">Para testar estes novos recursos do Firefox,<br>
+ Instale Firefox Developer Edition</a> Firefox 49 foi lançado em 20 de Setembro de 2016. Este artigo faz uma lista das principais alterações não só para desenvolvedores web, mas também desenvolvedores Firefox e Gecko e de extensões.</p>
+
+<h2 id="sect1"> </h2>
+
+<h2 id="Mudanças_para_desenvolvedores_web">Mudanças para desenvolvedores web</h2>
+
+<h3 id="Ferramentas_de_desenvolvimento">Ferramentas de desenvolvimento</h3>
+
+<ul>
+ <li>Erros de JavaScript registrados no console <a href="https://hacks.mozilla.org/2016/06/helping-web-developers-with-javascript-errors/">Agora com um link [Leia Mais]</a> para ajuda complementar na depuração ({{bug("1179876")}}).</li>
+ <li>CSS <span class="short_text" id="result_box" lang="pt"><span>autocompletar</span></span>: mostra mais sugestões para o autocompletar<br>
+  ({{bug("1260419")}}).</li>
+ <li>O inspector de animação agora <a href="/en-US/docs/Tools/Page_Inspector/How_to/Work_with_animations#Further_information_about_animation_compositing">fornece informações do desempenho da animação </a> nas ferramentas de desenvolvimento ({{bug("1254408")}}).</li>
+ <li>O <a href="/en-US/docs/Tools/Page_Inspector/How_to/Examine_and_edit_HTML#Element_popup_context_menu">menu de contexto do Inspector</a> foi reorganizado <span id="result_box" lang="pt"><span>ser mais claro e fácil de usar</span></span> ({{bug("1211613")}}).</li>
+ <li>O Inspector agora suporta sintaxe para valores de cores em  <code>#RRGGBBAA</code> e <code>#RGBA</code> ({{bug("1271191")}}).</li>
+ <li>As ferramentas de desvenvolvedor deixa de exibir marcas de fechamento automático (tal como {{HTMLElement("br")}} e {{HTMLElement("img")}} <span id="result_box" lang="pt"><span>como se eles tivessem uma tag de fechamento em páginas HTML</span></span> ; o comportamento é inalteravel para páginas XHTML ({{bug("820926")}}).</li>
+ <li>Melhorias na acessibilidade!
+  <ul>
+   <li>A caixa de ferramenta faz um trabalho melhor em assegurar que o foco no teclado seja mais visível ({{bug(1242851)}}).</li>
+   <li><span id="result_box" lang="pt"><span>Foram adicionados rótulos de acessibilidade a controles não marcados</span></span>  ({{bug(1242715)}}).</li>
+   <li><span id="result_box" lang="pt"><span>Adicionada semântica de exibição de árvore adequada e navegação de teclado para a exibição de marcação do Inspetor</span></span> ({{bug(1242694)}}).</li>
+  </ul>
+ </li>
+ <li>O <a href="/en-US/docs/Tools/Network_Monitor">Monitor de Rede</a> agora mostra uma coluna de Causa, onde fornece e indica o que causa de cada  requerimento de rede específico ({{bug(1134073)}}).</li>
+ <li>Na <em>about:debugging</em> página de extesões, o botão de recarregar é o único abilitado para extensões temporárias. Será desabilitado para todas as outras extensões ({{bug(1273184)}}).</li>
+ <li>Na página Workers em<em> about:debbuging</em>, uma mensagem de alerta será exibida na seção Service Workers se o <a href="https://developer.mozilla.org/en-US/docs/Tools/about:debugging#Service_workers_not_compatible">service workers for incompatíveil </a> com as configurações atuais do navegador ({{bug(1266415)}}).</li>
+ <li><em>about:debugging</em> agora existe uma <a href="/en-US/docs/Tools/about:debugging#Tabs">nova página de Tabs</a> disponível, quer fornece uma lista completa de todas abas abertas debugaveis na instancia do  Firefox ({{bug(1266128)}}).</li>
+ <li>A opção <em>Desabilitar Cache</em> na <a href="/en-US/docs/Tools/Settings#Advanced_settings">Caixa de ferramentas  de configurações avançadas</a> foi renomeada para Desabilitar HTTP Cache, para clarear que isso afeta o cache do HTTP, e não <a href="https://developer.mozilla.org/en-US/docs/Web/API/Service_Worker_API">Service Workers</a>/o <a href="https://developer.mozilla.org/en-US/docs/Web/API/Cache">Cache API</a> (bug(1253018)).</li>
+ <li>O <a href="/en-US/docs/Tools/Storage_Inspector#IndexedDB">Inspector de armazenamento agora permite IndexedDB databases ser deletado</a> através de seu próprio menu ({{bug("1205123")}}), e mostrará uma mensagem de alerta se a IndexedDB poder ser deletada por alguma rasão (Se ainda existir conexão ativa, por exemplo) ({{bug(1268460)}}).</li>
+</ul>
+
+<h3 id="HTML">HTML</h3>
+
+<ul>
+ <li>Adicionado suporte para estes elementros: {{HTMLElement("details")}} e {{HTMLElement("summary")}} ({{bug(1226455)}}).</li>
+ <li>O {{htmlattrxref("pattern", "input")}} atribuido para {{HTMLElement("input")}} agora usa o parâmetro <code>'u'</code> no  JavaScript base {{jsxref("RegExp")}} ({{bug(1227906)}}).</li>
+ <li>Para corresponder a uma mudança específica, de um valor inválido {{htmlattrxref("kind", "track")}} atributo do elemento {{HTMLElement('track')}} é agora tratado como <code>"metadata"</code> ao invés de<code>"subtitles"</code> ({{bug(1269712)}}).</li>
+ <li><span id="result_box" lang="pt"><span>O atributo </span></span> {{htmlattrxref("sandbox", "iframe")}} <span lang="pt"><span> do elemento </span></span> {{HTMLElement("iframe")}} <span lang="pt"><span> agora suporta os valores 'allow-popups-to-escape-sandbox' e 'allow-modals'</span></span> ({{bug(1190641)}}).</li>
+ <li>Suporte para atributos microdata e a Microdata API foram removidas ({{bug(909633)}}).</li>
+ <li>O atributo {{htmlattrxref("referrerpolicy", "a")}} do elemento {{HTMLElement("a")}} agora suporta esses atributos <code>'no-referrer-when-downgrade</code>' e <code>'origin-when-cross-origin'</code> ({{bug(1178337)}}).</li>
+ <li>O {{htmlattrxref("form", "label")}} que é atributo do elemento {{HTMLElement("label")}} foi removido. A propriedade {{domxref("HTMLLabelElement.form")}} ainda existe, mas agora retorna o formulário na qual o controle do label's está associado , se houver um controle (e se esse controle for associado ao formulário) ({{bug(1268852)}}).</li>
+</ul>
+
+<h3 id="CSS">CSS</h3>
+
+<ul>
+ <li>Adicionado {{cssxref("background-position-x")}} e {{cssxref("background-position-y")}}, que permite específicar e compensar separadamente a horizontal e a vertial para melhor posicionar a imagem de fundo; eles são compentes de {{cssxref("background-position")}} ({{bug("550426")}}).</li>
+ <li>Adicionado suporte para <code>as tags round</code> e <code>space</code> para {{cssxref("background-repeat")}} ({{bug("548372")}}).</li>
+ <li>no {{cssxref("background-clip")}}, as tags <code>text</code> são ativadas por padrão ({{bug(1264905)}}).</li>
+ <li>Adicionado suporte a cores específicas como o canal alpha usando 4- e 8-digitos CSS hex <a href="/en-US/docs/Web/CSS/color_value">cor</a> de valores (#RRGGBBAA e #RGBA) ({{bug("567283")}}).</li>
+ <li>A pseudo-class {{cssxref(":dir()")}} foi desprezado ({{bug(859301)}}).</li>
+ <li>Em nossa implementação experimental (ainda não ativa por padrão) de {{cssxref("clip-path")}}, podemos agora interpolar entre valores {{cssxref("&lt;basic-shape&gt;")}} ({{bug(1110460)}}).</li>
+ <li>Adicionado a <a href="/en-US/docs/Web/CSS/length#q"><code>unidade de comprimento q</code> </a> ({{bug(1274526)}}).</li>
+ <li>A propiedade {{cssxref("text-align-last")}} foi desprezada ({{bug(1039541)}}).</li>
+ <li>Adicionado suporte para {{cssxref("overflow-wrap")}}, substituindo  {{cssxref("word-wrap")}} que ainda é suportado como nome alternativo ({{bug(955857)}}).</li>
+ <li>Nossa experiencia com a implementação do <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout">CSS Grids</a> foi melhorado:
+  <ul>
+   <li>implementado {{cssxref("&lt;percentage&gt;")}} para as propriedades {{cssxref("grid-gap")}}, {{cssxref("grid-row-gap")}}, e {{cssxref("grid-column-gap")}} ({{bug(1266268)}}).</li>
+   <li>Implementado suporte a layout grid layout para {{cssxref("align")}}, {{cssxref("justify-self")}}<code>:baseline</code> e <code>last-baseline</code> (aka "baseline self-alignment") ({{bug(1221525)}}).</li>
+   <li>Implementado alinhamento de conteúdo baseline de item em grid ({{bug(1256429)}}).</li>
+  </ul>
+ </li>
+ <li>Nosso experimeto implementação de <a href="/en-US/docs/Web/CSS/CSS_Masks">CSS Masks</a> foi melhorado:
+  <ul>
+   <li>A propiedade {{cssxref("mask-origin")}} agora usa <code>border-box</code> ao invés de <code>padding-box</code> como valor inicial, para  <span class="short_text" id="result_box" lang="pt"><span>coincidir com a especificação</span></span> ({{bug(1258286)}}).</li>
+   <li>A propriedade {{cssxref("mask-repeat")}} suporta os seguintes volumes:  <code>space</code> e <code>round</code> values ({{bug(1258626)}}).</li>
+   <li>Corrigido o problema que impedia o atributo {{cssxref("mask-position")}}  de ser animado ({{bug(1273804)}}).</li>
+  </ul>
+ </li>
+ <li>O controle de preferências {{cssxref("text-emphasis")}} foi removido, assim o suporte para esta propiedade não pode ser mais desabilitado ({{bug(1229609)}}).</li>
+</ul>
+
+<h3 id="JavaScript">JavaScript</h3>
+
+<ul>
+ <li>As armadilhas para  ES2015 (ES6) {{jsxref("Global_Objects/Proxy/handler/getPrototypeOf", "getPrototypeOf()")}} e {{jsxref("Global_Objects/Proxy/handler/setPrototypeOf", "setPrototypeOf()")}} {{jsxref("Proxy")}} foram implementadas ({{bug(888969)}}).</li>
+ <li>O metodos ES2015 (ES6) {{jsxref("RegExp.prototype.@@match()", "RegExp.prototype[@@match]()")}}, {{jsxref("RegExp.prototype.@@replace()", "RegExp.prototype[@@replace]()")}}, {{jsxref("RegExp.prototype.@@search()", "RegExp.prototype[@@search]()")}}, e {{jsxref("RegExp.prototype.@@split()", "RegExp.prototype[@@split]()")}}, e {{jsxref("RegExp.@@species", "RegExp[@@species]")}} getter foram implementados ({{bug(887016)}}).</li>
+ <li>A versão obsoleta, <code>sem padrão nos argumentos de flags</code> do <code>String.prototype.</code>{{jsxref("String.prototype.match", "match")}}/{{jsxref("String.prototype.search", "search")}}/{{jsxref("String.prototype.replace", "replace")}} foi remivida ({{bug(1108382)}}).</li>
+ <li>O comportamento do metodo {{jsxref("Date.parse()")}} quando analisam 2-digit years foi modificado para mais <span class="short_text" id="result_box" lang="pt"><span>interoperável</span></span> com o navegador Google Chrome ({{bug(1265136)}}).</li>
+</ul>
+
+<h3 id="InterfacesAPIsDOM">Interfaces/APIs/DOM</h3>
+
+<h4 id="DOM_HTML_DOM">DOM &amp; HTML DOM</h4>
+
+<ul>
+ <li>O metodo {{domxref("DOMTokenList.supports()")}} foi adicionado ({{bug(1257849)}}).</li>
+ <li>O metodo {{domxref("DOMTokenList.replace()")}} foi adicionado ({{bug(1224186)}}).</li>
+ <li>O caractere principal <code>'?'</code> agora é ignorado no parâmetro do construtor  {{domxref("URLSearchParams.URLSearchParams", "URLSearchParams()")}}  ({{bug(1268361)}}).</li>
+ <li>O valor retornado por {{domxref("URL.origin")}}, {{domxref("HTMLAnchorElement.origin")}}, e {{domxref("HTMLAreaElement.origin")}} para URL usando o <code>blob:</code> o esquema não está mais  incorreto <code>null</code> mas em vez disso, a origem da URL formado pela remorção da tag <code>blob:</code> ({{bug(1270451)}}).</li>
+ <li>No modo de pre-renderização, a propriedade  {{domxref('Document.visibilityState')}} agora retorna <code>'prerender'</code> ({{bug(1069772)}}).</li>
+ <li>A propriedade {{domxref("Window.isSecureContext")}} foi implantada ({{bug(1162772)}}).</li>
+ <li>Os metodos DOM4 {{domxref("ChildNode.before()")}}, {{domxref("ChildNode.after()")}}, {{domxref("ChildNode.replaceWith()")}}, {{domxref("ParentNode.append()")}} e {{domxref("ParentNode.prepend()")}} foram implementados ({{bug(911477)}}).</li>
+ <li>O metodo {{domxref("TouchList.identifiedTouch()")}} foi removido ({{bug(1188539)}}).</li>
+ <li>Por padrão, a característica <code>scrollbars</code> {{domxref("Window")}} é habilitado quando chamado {{domxref("Window.open()")}}. Anteriormente, quanto era altamente recomendado ativar ele, pois não era padrão ({{bug(1257887)}}).</li>
+ <li>Adicionado o <em>metodo experimental</em> e <em>non-standard</em> do metodo {{domxref("HTMLMediaElement.seekToNextFrame()")}}, que permite bucar quadro a quadro no conteúdo do vídeo ({{bug(1235301)}}). Equanto você é incentivado a expertimentar, dessar forma você nos ajuda a entender o quão útil ele é, <em>não use ele em produção de código!</em></li>
+ <li>A propriedade {{domxref("HTMLLabelElement.form")}} agora retorna a forma com que o controle de label's foi assiciado, se houver um controle (e se esse controle for associado ao formulário). Anteriormente, labels eram diretamente associados com formulários usando essa propriedade ({{bug(1268852)}}).</li>
+ <li>Suporte ao paramtro third de {{domxref("EventTarget.addEventListener()")}}, ou um {{jsxref("Boolean")}} ou a {{interface("EventListenerOptions")}} foi adicionado ({{bug(1266164)}} and {{bug(1266066)}}).</li>
+ <li>O volume do audio relativo a {{domxref("KeyboardEvent.key")}} foram renomeados. <code>"VolumeDown"</code> é agora <code>"AudioVolumeDown"</code>, <code>"VolumeUp"</code> é agora <code>"AudioVolumeUp"</code>, e <code>"VolumeMute"</code> e agora <code>"AudioVolumeMute".</code> Isso trás Firefox p<em><span style="font-style: normal;">ara alinhamento com os últimos rascunhos de especificações de UI Events</span></em> ({{bug(1272578)}}). Veja {{SectionOnPage("/en-US/docs/Web/API/KeyboardEvent/code", "Code values")}} para uma lista completa de possibilidades de códigos.</li>
+ <li>Os códigos ateriormente referidos a <code>"MozHomeScreen"</code>, <code>"MozCameraFocusAdjust"</code>, e <code>"MozPhoneCall"</code> agora tem nomes oficiais na especificação UI Events: <code>"GoHome"</code>, <code>"CameraFocus"</code>, e <code>"Call"</code>. Firefox 49 foi atualizado para utilizar os novos nomes ({{bug(1272599)}}). Veja {{SectionOnPage("/en-US/docs/Web/API/KeyboardEvent/code", "Code values")}} para uma lista completa de possilidades de códigos</li>
+ <li>O valor dos códigos <code>"Separator"</code> e <code>"MediaSkip"</code> foram removidos, por serem desatualizados e não utilizados ({{bug(1232919)}}).</li>
+ <li>Valor do código e a correspondencia dos códigos <code>"Hyper"</code> e <code>"Super"</code>foi adicionado para representar os modificadores de herança dos códigos ({{bug(1232919)}}).</li>
+ <li>
+  <p style="margin-bottom: 0cm; line-height: 100%;"><em><span style="font-style: normal;">Duas teclas do teclado numérico multimídia foram adicionados</span></em>: <code>"Key11"</code> e <code>"Key12"</code> ({{bug(1232919)}}).</p>
+ </li>
+ <li>
+  <p style="margin-bottom: 0cm; line-height: 100%;"><em><span style="font-style: normal;">Foram adicionados novos códigos para controle de audio</span></em>: <code>"AudioBassBoostToggle"</code>, <code>"AudioTrebleDown"</code>, e <code>"AudioTrebleUp"</code> ({{bug(123919)}}).</p>
+ </li>
+ <li>Adiconado código para controle do mocrofone: <code>"</code><code>MicrophoneToggle"</code>, <code>"</code><code>MicrophoneVolumeDown"</code>, <code>"</code><code>MicrophoneVolumeUp"</code>, e <code>"</code><code>MicrophoneVolumeMute"</code> ({{bug(123919)}}).</li>
+ <li>
+  <p style="margin-bottom: 0cm; line-height: 100%;"><em><span style="font-style: normal;">Adicionado novo código de suporte a dispositivos de reconhecimento de fala</span></em>: "<code>SpeechCorrectionList"</code> e <code>"</code><code>SpeechInputToggle"</code> ({{bug(1232919)}}).</p>
+ </li>
+ <li>
+  <p style="margin-bottom: 0cm; line-height: 100%;"><em><span style="font-style: normal;">Nova tecla foi adicionada para suportar botões especiais em telefones</span></em>: <code>"</code><code>AppSwitch"</code>, <code>"</code><code>Call"</code>, <code>"</code><code>CameraFocus"</code>, <code>"</code><code>EndCall"</code>, <code>"</code><code>GoBack"</code>, <code>"</code><code>GoHome"</code>, <code>"</code><code>HeadsetHook"</code>, <code>"</code><code>LastNumberRedial"</code>, <code>"</code><code>Notification"</code>, <code>"</code><code>MannerMode"</code>, e <code>"</code><code>VoiceDial"</code> ({{bug(1232919)}}).</p>
+ </li>
+ <li>Um novo botão de aplicação foi adicionado: <code>"</code><code>LaunchContacts"</code> e <code>"</code><code>LaunchPhone"</code> ({{bug(1232919)}}).</li>
+ <li>Adicionado novos códigos de suporte a dispositivos de TV: <code>"</code><code>TV3DMode"</code>, <code>"</code><code>TVAntennaCable"</code>, <code>"</code><code>TVAudioDescription"</code>, <code>"</code><code>TVAudioDescriptionMixDown"</code>, <code>"</code><code>TVAudioDescriptionMixUp"</code>, <code>"</code><code>TVContentsMenu"</code>, <code>"</code><code>TVDataService"</code>, <code>"</code><code>TVInput"</code>, <code>"</code><code>TVInputComponent1"</code>, <code>"</code><code>TVInputComponent2"</code>, <code>"</code><code>TVInputComposite1"</code>, <code>"</code><code>TVInputComposite2"</code>, <code>"</code><code>TVInputHDMI1"</code>, <code>"</code><code>TVInputHDMI2"</code>, <code>"</code><code>TVInputHDMI3"</code>, <code>"</code><code>TVInputHDMI4"</code>, <code>"</code><code>TVInputVGA1"</code>, <code>"</code><code>TVMediaContext"</code>, <code>"</code><code>TVNetwork"</code>, <code>"</code><code>TVNumberEntry"</code>, <code>"</code><code>TVRadioService"</code>, <code>"</code><code>TVSatellite"</code>, <code>"</code><code>TVSatelliteBS"</code>, <code>"</code><code>TVSatelliteCS"</code>, <code>"</code><code>TVSatelliteToggle"</code>, <code>"</code><code>TVTerrestrialAnalog"</code>, <code>"</code><code>TVTerrestrialDigital"</code>, <code>"</code><code>TVTimer"</code>, e <code>"</code><code>DVR"</code> ({{bug(1232919)}}).</li>
+ <li>O código <code>"</code><code>MediaSelect"</code> foi substituido pelo valor padrão <code>"</code><code>LaunchMediaPlayer"</code> ({{bug(1272592)}}).</li>
+ <li>
+  <p style="margin-bottom: 0cm; line-height: 100%;"><em><span style="font-style: normal;">Foram adicionados códigos adicionais para mídia-player</span></em>. São esses <code>"</code><code>MediaAudioTrack"</code>, <code>"</code><code>MediaSkipBackward"</code>, <code>"</code><code>MediaSkipForward"</code>, <code>"</code><code>MediaStepBackward"</code>, <code>"</code><code>MediaStepForward"</code>, <code>"</code><code>MediaTopMenu"</code>, <code>"</code><code>NavigateIn"</code>, <code>"</code><code>NavigateNext"</code>, <code>"</code><code>NavigateOut"</code>, e <code>"</code><code>NavigatePrevious"</code> ({{bug(1232919)}}).</p>
+ </li>
+</ul>
+
+<h4 id="Canvas">Canvas</h4>
+
+<ul>
+ <li>A propriedade {{domxref("CanvasRenderingContext2D.filter")}}, que fornece suporte para adicionar foltros a uma canvas, agora é ativa por padrão e não precisa mais ser abilitado nas preferências ({{bug(1173545)}}).</li>
+</ul>
+
+<h4 id="WebGL">WebGL</h4>
+
+<ul>
+ <li>A extensão {{domxref("EXT_color_buffer_float")}} {{domxref("WebGL2RenderingContext", "WebGL 2", "", 1)}} foi implementada ({{bug(1129332)}}).</li>
+ <li>O evento {{Event("webglcontextcreationerror")}}, que é criando quando a tentativa de criação de contexto do WebGL falha, foi implementado ({{bug(1271478)}}). Use isso para ajudar a entender melhor, tanto para depuração quanto para o processamento de errros de produção.</li>
+</ul>
+
+<h4 id="IndexedDB">IndexedDB</h4>
+
+<ul>
+ <li>Agora você pode renomear IndexedDB indexes; a propriedade {{domxref("IDBIndex.name")}} já não é mais de leitura-única ({{bug(1118028)}}).</li>
+ <li>Você também pode renomear {{domxref("IDBObjectStore")}}s; a propriedade {{domxref("IDBObjectStore.name")}} já não é de leitura-única ({{bug(1118028)}}).</li>
+</ul>
+
+<h4 id="Service_Workers_e_relatórios">Service Workers e relatórios</h4>
+
+<ul>
+ <li>O Objeto <a href="/en-US/docs/Web/API/Fetch_API">Fetch API</a>'s {{domxref("Response")}} agora implementa a propriedade {{domxref("Response.redirected", "redirected")}} , <span id="result_box" lang="pt"><span>que indica se a resposta é para uma solicitação que foi redirecionada</span></span>. Por favor ervise o relatório de segurança na documentação usanda anteriormente nessa propriedade ({{bug(1243792)}}).</li>
+ <li>Na <a href="/en-US/docs/Web/API/Permissions_API">API de Permissões</a>, Firefox já não suporta a palavra <code>PermissionDescriptor</code> ti <span id="result_box" lang="pt"><span> push (referido na especificação como </span></span><code>PushPermissionDescriptor</code>); Isso ocorre porque o Firefox depende de um sistema de cotas<span class="short_text" id="result_box" lang="pt"><span> para controloar o status</span></span> <code>userVisibleOnly</code>, <span id="result_box" lang="pt"><span>e estava lançando um erro ao encontrar uma instância do</span></span> <code>PushPermissionDescriptor</code> ({{bug(1266821)}}). Com essa palavra removida, o Firefox simplismente ignora.</li>
+</ul>
+
+<h4 id="Streams_de_mídia">Streams de mídia</h4>
+
+<ul>
+ <li>Antigamente, era possível chamar {{domxref("MediaDevices.getUserMedia()")}} como requerimento ambos áudio e vídeo <span id="result_box" lang="pt"><span>para ter sucesso nos casos em que o usuário tem apenas um dos dois tipos de hardware disponíveis</span></span> . Isso foi fixado ({{bug(802326)}}).</li>
+ <li>Nas versões anteriores do Firefox, era possível chamar por {{domxref("MediaDevices.getUserMedia()")}} que solicita tando audio quanto vídeo <span id="result_box" lang="pt"><span>para ter êxito mesmo que o usuário tenha negado acesso a um, mas não a ambos os dispositivos de correspondência</span></span>. Isso foi fixado ({{bug(802326)}}). Isso envolve pequenas alterações na interface de usuários, para remover a opção para escolher "sem áudio" ou "Sem vídeo" quando o usuário é solicitado para as permissões.</li>
+ <li>O metodo {{domxref("MediaStream.getTrackById()")}} foi implantado ({{bug(1208390)}}).</li>
+</ul>
+
+<h4 id="WebRTC">WebRTC</h4>
+
+<ul>
+ <li>O metodo {{domxref("RTCPeerConnection.addTrack()")}} foi atualizado para permitir tracks <span id="result_box" lang="pt"><span>sue não são componentes dos </span></span> stream <span lang="pt"><span> especificados a serem adicionados à conexão</span></span>. Ao invés, os streams são usados para agrupar tracks na extremidade receptora da conexão ({{bug(1271669)}}).</li>
+</ul>
+
+<h4 id="Novas_APIs">Novas APIs</h4>
+
+<ul>
+ <li>A API {{domxref("PerformanceObserver")}} agpra é ativa por padrão no Nightly. Isso não é atio por padrão em outras versõs do Firefox 49 ({{bug(1271487)}}).</li>
+</ul>
+
+<h4 id="Outras">Outras</h4>
+
+<ul>
+ <li>{{domxref("XMLHttpRequest.getResponseHeader()")}} e {{domxref("XMLHttpRequest.getAllResponseHeaders()")}} r<span class="short_text" id="result_box" lang="pt"><span>etornar cabeçalhos vazios caso a preferência </span></span><code>network.http.keep_empty_response_headers_as_empty_string</code> esta configurado para <code>true</code> ({{bug(669259)}}).</li>
+ <li>O Firefox OS-apenas <a href="/en-US/docs/Archive/Firefox_OS/API/Data_Store_API">API Banco de Dados</a> foi removida ({{bug(1261009)}}).</li>
+ <li>A <a href="/en-US/docs/Web/API/Fullscreen_API">API de Tela Cheia</a> manipulador de eventos {{domxref("Document.onfullscreenchange")}} e {{domxref("Document.onfullscreenerror")}} foram removidos de  {{domxref("Element")}} como nunca foram usados la; <span id="result_box" lang="pt"><span>As versões de prefixo desses manipuladores de eventos foram mantidas lá para fins de compatibilidade</span></span>, Contudo ({{bug(1270386)}}). Observe que ele não é ativado por padrão, mas está atrás da preferência  <code>full-screen-api.unprefix.enabled</code> ({{bug(1268749)}}).</li>
+ <li>A propriedade obsoleta {{domxref("Document.mozFullScreen")}} não foi pré-fixada {{domxref("Document.fullscreen")}} {{bug(1269157)}}}. Perceba que ela não é ativa por padrão nas preferencias the <code>full-screen-api.unprefix.enabled</code> ({{bug(1268749)}}).</li>
+ <li>A propriedade leitor {{domxref("Document.fullscreenElement")}} e {{domxref("Document.fullscreenEnabled")}} deixa de lançar exceção se hover tentativa de alterar o seu valor; ao invés disso, o novo valor é ignorado e a função setter é uma no-op ({{bug(1269798)}}).</li>
+ <li>Qualquer tipode de dado pode ser agora recuperado da área de tranferência usada {{domxref("DataTransfer.getData()")}}: anteriormente, apenas alguns tipos de dados do tipo MIME eram suportados {{bug(860857)}}.</li>
+ <li>Nossa implementação da <a href="/en-US/docs/Web/API/Frame_Timing_API">API da cronometragrm de frames</a>, consistindo nas duas interfaces <code>PerformanceCompositeTiming</code> e <code>PerformanceRenderTiming</code>, foram removidas pois as especificações foram totalmente reescritas ({{bug(1271846)}}).</li>
+ <li>Para especificações correspondentes, a propriedade {{domxref("VTTCue.positionAlign")}} agora retorna um <code>PositionAlign</code> enum em vez de <code>Align</code> enum ({{bug(1276129)}}).</li>
+ <li>A parte de síntese da <a href="/en-US/docs/Web/API/Web_Speech_API#Speech_synthesis">API Web Speech </a> agora é ativo por padrão ({{bug(1268633)}}).</li>
+ <li>A <a href="/en-US/docs/Web/API/Performance_Timeline">API Timeline de performace</a> agora está disponível de padrão no Nightly (embrora não no Aurora, Beta ou Release).</li>
+ <li>O evento {{event("install")}}, e o {{domxref("Window.oninstall")}} manipulador de evento, são agora suportado por <a href="/en-US/docs/Web/Manifest">Web Manifests</a> ({{bug(1265279)}}).</li>
+ <li>Quando usar o metodo {{domxref("AudioContext.createPeriodicWave()")}} de <a href="/en-US/docs/Web/API/Web_Audio_API">Web Audio API</a>, você pode específicar <span id="result_box" lang="pt"><span>se a onda periódica resultante deve ser normalizada incluindo um objeto de dicionário como o terceiro parâmetro, que inclui um único parâmetro</span></span> — <code>{disableNormalization: true}</code> ({{bug(1265405)}}).</li>
+ <li>Na APIWebVTT, {{domxref("VTTCue.positionAlign")}} retorna corretamente um <code>PositionAlignSetting</code> enum conforme a especificação; anteriormente ele retornava um <code>AlignSetting</code> enum ({{bug(1276129)}}).</li>
+ <li>A parte de síntese de fala da API Web Speech agora é habilitado por padrão em todos os navegadores desktop ({{bug(1268633)}}).</li>
+ <li>O contrutor de <a href="/en-US/docs/Web/API/Web_Animations_API">API Web Animations </a>{{domxref("Animation.Animation()", "Animation()")}} agora aceita null na timeline ({{bug(1096776)}}).</li>
+</ul>
+
+<h3 id="MathML">MathML</h3>
+
+<p><em>Sem mudanças.</em></p>
+
+<h3 id="SVG">SVG</h3>
+
+<ul>
+ <li>Removido o suporte por ser considerador obsoleto os seguintes elementos: {{SVGElement('altGlyph')}}, {{SVGElement('altGlyphDef')}} e {{SVGElement('altGlyphItem')}}  ({{bug(1260032)}}).</li>
+</ul>
+
+<h3 id="AudioVideo">Audio/Video</h3>
+
+<p><em>Sem mudanças.</em></p>
+
+<h2 id="HTTP">HTTP</h2>
+
+<ul>
+ <li><code>O diretiva <a href="/en-US/docs/Web/HTTP/Headers/Cache-Control">Cache-Control: immutable</a></code> foi implantada ({{bug(1267474)}}). Veja também essa <a href="https://bitsup.blogspot.de/2016/05/cache-control-immutable.html">postagem no blog</a> para mais informações.</li>
+</ul>
+
+<h2 id="Networking">Networking</h2>
+
+<ul>
+ <li>A implementação do <a href="/en-US/docs/Mozilla/Projects/Necko/Proxy_Auto-Configuration_(PAC)_file">Auto-configuração de Proxy (PAC)</a> foi atualizada. Agora <code>weekdayRange</code>, <code>dateRange</code>, e <code>timeRange</code> suportam "intervalos invertidos", por exempo, <code>weekdayRange("SAT", "MON")</code> avaliare <code>true</code> se o dia atual é Saturday, Sunday, ou Monday ({{bug(1251332)}}).</li>
+</ul>
+
+<h2 id="Segurança">Segurança</h2>
+
+<ul>
+ <li>A propriedade {{domxref("Window.isSecureContext")}}, indica se o contexto é capaz de usar recursos que exigem <a href="/en-US/docs/Web/Security/Secure_Contexts">contextos de segurança</a>, foi implementado ({{bug(1162772)}}).</li>
+</ul>
+
+<h2 id="Compatilibidade">Compatilibidade</h2>
+
+<p>A fim de melhorar a compatilidade com o conteúdo existente, Firefox agora aceita algumas propriedades e atributos do webkit.</p>
+
+<ul>
+ <li>    <span id="result_box" lang="pt"><span>As propriedades a seguir também trabalham com prefixo</span></span> -webkit:
+
+  <ul>
+   <li>{{cssxref("-webkit-align-items")}}</li>
+   <li>{{cssxref("-webkit-align-content")}}</li>
+   <li>{{cssxref("-webkit-align-self")}}</li>
+   <li>{{cssxref("-webkit-animation")}}</li>
+   <li>{{cssxref("-webkit-animation-delay")}}</li>
+   <li>{{cssxref("-webkit-animation-direction")}}</li>
+   <li>{{cssxref("-webkit-animation-duration")}}</li>
+   <li>{{cssxref("-webkit-animation-fill-mode")}}</li>
+   <li>{{cssxref("-webkit-animation-iteration-count")}}</li>
+   <li>{{cssxref("-webkit-animation-name")}}</li>
+   <li>{{cssxref("-webkit-animation-play-state")}}</li>
+   <li>{{cssxref("-webkit-animation-timing-function")}}</li>
+   <li>{{cssxref("-webkit-backface-visibility")}}</li>
+   <li>{{cssxref("-webkit-background-clip")}}</li>
+   <li>{{cssxref("-webkit-background-origin")}}</li>
+   <li>{{cssxref("-webkit-background-size")}}</li>
+   <li>{{cssxref("-webkit-border-bottom-left-radius")}}</li>
+   <li>{{cssxref("-webkit-border-bottom-right-radius")}}</li>
+   <li>{{cssxref("-webkit-border-image")}}</li>
+   <li>{{cssxref("-webkit-border-top-left-radius")}}</li>
+   <li>{{cssxref("-webkit-border-top-right-radius")}}</li>
+   <li>{{cssxref("-webkit-border-radius")}}</li>
+   <li>{{cssxref("-webkit-box-shadow")}}</li>
+   <li>{{cssxref("-webkit-filter")}}</li>
+   <li>{{cssxref("-webkit-flex")}}</li>
+   <li>{{cssxref("-webkit-flex-basis")}}</li>
+   <li>{{cssxref("-webkit-flex-direction")}}</li>
+   <li>{{cssxref("-webkit-flex-flow")}}</li>
+   <li>{{cssxref("-webkit-flex-grow")}}</li>
+   <li>{{cssxref("-webkit-flex-shrink")}}</li>
+   <li>{{cssxref("-webkit-flex-wrap")}}</li>
+   <li>{{cssxref("-webkit-justify-content")}}</li>
+   <li>{{cssxref("-webkit-order")}}</li>
+   <li>{{cssxref("-webkit-perspective")}}</li>
+   <li>{{cssxref("-webkit-perspective-origin")}}</li>
+   <li>{{cssxref("-webkit-text-size-adjust")}}</li>
+   <li>{{cssxref("-webkit-transform")}}</li>
+   <li>{{cssxref("-webkit-transform-origin")}}</li>
+   <li>{{cssxref("-webkit-transform-style")}}</li>
+   <li>{{cssxref("-webkit-transition")}}</li>
+   <li>{{cssxref("-webkit-transition-delay")}}</li>
+   <li>{{cssxref("-webkit-transition-duration")}}</li>
+   <li>{{cssxref("-webkit-transition-property")}}</li>
+   <li>{{cssxref("-webkit-transition-timing-function")}}</li>
+   <li>{{cssxref("-webkit-user-select")}}</li>
+  </ul>
+ </li>
+ <li><span id="result_box" lang="pt"><span>As propriedades a seguir correspondem à propriedade prefixa equivalente</span></span>
+  <ul>
+   <li>{{cssxref("-webkit-box-flex")}}</li>
+   <li>{{cssxref("-webkit-box-ordinal-group")}}</li>
+   <li>{{cssxref("-webkit-box-orient")}}</li>
+   <li>{{cssxref("-webkit-box-align")}}</li>
+   <li>{{cssxref("-webkit-box-pack")}}</li>
+  </ul>
+ </li>
+ <li>Para valores {{cssxref("&lt;image&gt;")}}:
+  <ul>
+   <li><span id="result_box" lang="pt"><span>As funções a seguir correspondem aos seus equivalentes não predefinidos:</span></span> {{cssxref("-webkit-linear-gradient", "-webkit-linear-gradient()")}}, {{cssxref("-webkit-radial-gradient", "-webkit-radial-gradient()")}}, {{cssxref("-webkit-repeating-linear-gradient", "-webkit-repeating-linear-gradient()")}}, e {{cssxref("-webkit-repeating-radial-gradient","-webkit-repeating-radial-gradient()")}}.</li>
+   <li>O desatualizado <code>-webkit-gradient</code> é suportado (e traduzindo para um gradiente regular)</li>
+  </ul>
+ </li>
+ <li>Os seguintes valores {{cssxref("display")}} foram traduzidos:
+  <ul>
+   <li><code>-webkit-box</code> to <code>-moz-box</code></li>
+   <li><code>-webkit-flex</code> to <code>flex</code></li>
+   <li><code>-webkit-inline-box</code> to <code>inline-flex</code></li>
+   <li><code>-webkit-inline-flex</code> to <code>-moz-inline-flex</code></li>
+  </ul>
+ </li>
+ <li> As seguintes propriedades são suportadas ( <span id="result_box" lang="pt"><span>E não mapeia para qualquer equivalente não predefinido</span></span>):
+  <ul>
+   <li>{{cssxref("-webkit-text-fill-color")}}</li>
+   <li>{{cssxref("-webkit-text-stroke-color")}}</li>
+   <li>{{cssxref("-webkit-text-stroke-width")}}</li>
+   <li>{{cssxref("-webkit-text-stroke")}}</li>
+  </ul>
+ </li>
+ <li>A interface {{domxref("WebKitCSSMatrix")}} é um nome de {{domxref("DOMMatrix")}}</li>
+ <li><span id="result_box" lang="pt"><span>Os seguintes recursos de consulta de mídia foram implementados</span></span>:
+  <ul>
+   <li><code>-webkit-min-device-pixel-ratio</code> é um nome para <code><a href="/en-US/docs/Web/CSS/Media_Queries/Using_media_queries#resolution">min-resolution</a></code> com o mesmo valor em (em <code>dppx)</code>, embora este recurso seja <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=1237720">disabilitado por padrão</a> (atras de preferências no about:config <code>layout.css.prefixes.device-pixel-ratio-webkit</code>)</li>
+   <li><code>-webkit-max-device-pixel-ratio</code> é um nome de <code><a href="/en-US/docs/Web/CSS/Media_Queries/Using_media_queries#resolution">max-resolution</a></code> para o mesmo valor (em <code>dppx</code>); essa característica é destivada por padrão, atras da mesma preferência no about:config</li>
+   <li><code><a href="/en-US/docs/Web/CSS/Media_Queries/Using_media_queries#-webkit-transform-3d">-webkit-transform-3d</a></code> sempre combinando, indicando suporte a transformações 3D.</li>
+  </ul>
+ </li>
+</ul>
+
+<h2 id="Mudanças_para_extensões_e_desenvolvedores_Mozilla">Mudanças para extensões e desenvolvedores Mozilla</h2>
+
+<h3 id="Extensões_WEB">Extensões WEB</h3>
+
+<ul>
+ <li>Suporte a {{WebExtAPIRef("history")}} foi adicionado. Isso fornece acesso a histórico do navegador, com metodos disponíveis para pesquisar no histórico, obtendo informações sobre páginas visitanas anteriormente, e adicionando e removendo entradas no históricos.</li>
+ <li>Adicionado o metodo {{WebExtAPIRef("tabs.removeCSS()")}} para aba API. Esse metodo permite remover o CSS que foi anteriormente injetado por chamada  {{WebExtAPIRef("tabs.insertCSS()")}}.</li>
+</ul>
+
+<h3 id="Interfaces">Interfaces</h3>
+
+<ul>
+ <li>No {{domxref("EventTarget.addEventListener()")}}, o valor <code>mozSystemGroup</code>,  ativa apenas com o código rodando no XBL ou no Firefox's chrome, e um {{jsxref("Boolean")}} que indica se o ouvinte foi adicionado ao grupo do sistema. ({{bug(1274520)}})</li>
+</ul>
+
+<h3 id="Outros">Outros</h3>
+
+<p><em>Sem mudanças!.</em></p>
+
+<h2 id="Veja_tambpem">Veja tambpem</h2>
+
+<ul>
+ <li><a href="https://www.fxsitecompat.com/en-US/versions/49">Sites compatíveis com o Firefox 49</a></li>
+</ul>
+
+<h2 id="Outras_versões">Outras versões</h2>
+
+<p>{{Firefox_for_developers(48)}}</p>
diff --git a/files/pt-br/mozilla/firefox/releases/50/index.html b/files/pt-br/mozilla/firefox/releases/50/index.html
new file mode 100644
index 0000000000..fc558d4eef
--- /dev/null
+++ b/files/pt-br/mozilla/firefox/releases/50/index.html
@@ -0,0 +1,150 @@
+---
+title: Firefox 50 for developers
+slug: Mozilla/Firefox/Releases/50
+translation_of: Mozilla/Firefox/Releases/50
+---
+<div>{{FirefoxSidebar}}</div>
+
+<p>O Firefox 50 foi lançado em 15 de novembro de 2016. Este artigo lista as principais alterações que são úteis não só para os desenvolvedores Web, mas também para os desenvolvedores do Firefox e Gecko, assim como os desenvolvedores do Add-on.</p>
+
+<h2 id="Mudanças_para_desenvolvedores_web">Mudanças para desenvolvedores web</h2>
+
+<h3 id="Developer_Tools">Developer Tools</h3>
+
+<p><span class="short_text" id="result_box" lang="pt"><span>Nenhuma mudança</span><span>.</span></span></p>
+
+<h3 id="HTML">HTML</h3>
+
+<ul><br>
+ <li>For compatibility purposes, the non-standard {{HTMLattrxref("webkitdirectory", "input")}} attribute of the {{HTMLElement("input")}} element, as well as the property {{domxref("HTMLInputElement.webkitDirectory")}} property, have been implemented ({{bug(1258489)}}).</li>
+ <li>The default style of {{HTMLElement("bdo")}} now has a {{cssxref("unicode-bidi")}} with the <code>isolate-override</code> value ({{bug(1249497)}}).</li>
+</ul>
+
+<h3 id="CSS">CSS</h3>
+
+<ul>
+ <li>Border-radiused corner with dashed and dotted style is now rendered with specified style instead of solid style ({{bug(382721)}}).</li>
+ <li>The non-standard {{cssxref(":-moz-full-screen-ancestor")}} pseudo-class selector has been removed ({{bug(1199529)}}).</li>
+ <li>The {{cssxref("box-sizing")}}<code>: padding-box</code> has been removed, since it’s no longer a part of the spec and Firefox was the only major browser to implement it ({{bug(1166728)}}).</li>
+ <li>Our experimental implementation of {{cssxref('mask-position')}} now supports animation of this property ({{bug(1273804)}}). It is still available only on Nightly.</li>
+ <li>The three values <code>isolate</code>, <code>isolate-override</code>, and <code>plaintext</code> of the {{cssxref("unicode-bidi")}} have been unprefixed ({{bug(1141895)}}).</li>
+ <li>In quirk mode, the bullet of a list now inherit the size of the list, like in standard mode ({{bug(648331)}}).</li>
+ <li>Changed behavior of the {{cssxref(":in-range")}} and {{cssxref(":out-of-range")}} pseudo-classes to not match disabled or read-only inputs ({{bug(1264157)}}).</li>
+ <li>Unprefixed {{cssxref(":any-link")}} pseudo-class {{bug(843579)}}.</li>
+ <li>Implemented <code>space</code> value of {{cssxref("border-image-repeat")}} ({{bug(720531)}}).</li>
+</ul>
+
+<h3 id="JavaScript">JavaScript</h3>
+
+<ul>
+ <li>The ES2015 {{jsxref("Symbol.hasInstance")}} property has been implemented ({{bug(1054906)}}).</li>
+ <li>The ES2017 {{jsxref("Object.getOwnPropertyDescriptors()")}} method has been implemented ({{bug(1245024)}}).</li>
+ <li>The behavior of \W in {{jsxref("RegExp")}} with unicode and ignoreCase flags is changed to match recent draft spec. Now it doesn't match to K, S, k, s, and KELVIN SIGN (U+212A), and LATIN SMALL LETTER LONG S (U+017F) ({{bug(1281739)}}).</li>
+</ul>
+
+<h3 id="InterfacesAPIsDOM">Interfaces/APIs/DOM</h3>
+
+<h4 id="DOM_HTML_DOM">DOM &amp; HTML DOM</h4>
+
+<ul>
+ <li>The {{domxref("HTMLInputElement.webkitdirectory")}} property is now supported ({{bug(1258489)}}).</li>
+ <li>Support <code>once</code> option for {{domxref("EventTarget.addEventListener()")}} ({{bug(1287706)}}).</li>
+</ul>
+
+<h4 id="Canvas">Canvas</h4>
+
+<p><em>No change.</em></p>
+
+<h4 id="WebGL">WebGL</h4>
+
+<ul>
+ <li>The {{domxref("EXT_shader_texture_lod")}} WebGL extension has been implemented ({{bug(1111689)}}).</li>
+</ul>
+
+<h4 id="IndexedDB">IndexedDB</h4>
+
+<p><em>No change.</em></p>
+
+<h4 id="Service_Workers">Service Workers</h4>
+
+<ul>
+ <li>The {{domxref("WindowClient.navigate()")}} method has been implemented. This method lets you open a specified URL into a client window which is being controlled by the service worker ({{bug(1218148)}}).</li>
+</ul>
+
+<h4 id="WebRTC">WebRTC</h4>
+
+<ul>
+ <li>The {{domxref("RTCDataChannel.stream")}} property has been removed. This was replaced with {{domxref("RTCDataChannel.id")}} in <a href="/en-US/docs/Mozilla/Firefox/Releases/24">Firefox 24</a>, but was supported for backward compatibility. Please be sure to update your code to use the <code>id</code> property if you haven't done so yet.</li>
+</ul>
+
+<h4 id="New_APIs">New APIs</h4>
+
+<p><em>No change.</em></p>
+
+<h4 id="Others">Others</h4>
+
+<ul>
+ <li>{{domxref("XMLHttpRequest.getResponseHeader()")}} and {{domxref("XMLHttpRequest.getAllResponseHeaders()")}} now also return empty headers by default. This can be controlled via the preference <code>network.http.keep_empty_response_headers_as_empty_string</code> ({{bug(918721)}}).</li>
+</ul>
+
+<h3 id="MathML">MathML</h3>
+
+<p><em>No change.</em></p>
+
+<h3 id="SVG">SVG</h3>
+
+<p><em>No change.</em></p>
+
+<h3 id="AudioVideo">Audio/Video</h3>
+
+<p><em>No change.</em></p>
+
+<h2 id="HTTP">HTTP</h2>
+
+<ul>
+ <li>The experimental (and deprecated) <a href="https://en.wikipedia.org/wiki/SPDY">SPDY</a> 3.1 is now disable by default {{bug(1287132)}}.</li>
+ <li>Support for {{HTTPHeader("X-Content-Type-Options")}} has been added ({{bug(471020)}}).</li>
+</ul>
+
+<h2 id="Networking">Networking</h2>
+
+<ul>
+ <li>The {{htmlattrxref("ping", "a")}} attribute of {{htmlelement("a")}} element is now abiding by the <code><a href="https://developer.mozilla.org/en-US/docs/Web/Security/CSP/CSP_policy_directives#connect-src">connect-src</a></code> <a href="https://developer.mozilla.org/en-US/docs/Web/Security/CSP/CSP_policy_directives">CSP 1.1 policy directive</a> ({{bug(1100181)}}).</li>
+ <li>Support of the <code><a href="https://developer.mozilla.org/en-US/docs/Web/Security/CSP/CSP_policy_directives#sandbox">sandbox</a></code> <a href="/en-US/docs/Web/Security/CSP">CSP</a> directive has been added ({{bug(671389)}}).</li>
+</ul>
+
+<h2 id="Segurança"><span class="short_text" id="result_box" lang="pt"><span>Segurança</span></span></h2>
+
+<p><span class="short_text" id="result_box" lang="pt"><span>Nenhuma mudança</span><span>.</span></span></p>
+
+<h2 id="Changes_for_add-on_and_Mozilla_developers">Changes for add-on and Mozilla developers</h2>
+
+<h3 id="Interfaces">Interfaces</h3>
+
+<p><em>No change.</em></p>
+
+<h3 id="XUL">XUL</h3>
+
+<p><em>No change.</em></p>
+
+<h3 id="JavaScript_code_modules">JavaScript code modules</h3>
+
+<p><em>No change.</em></p>
+
+<h3 id="XPCOM">XPCOM</h3>
+
+<p><em>No change.</em></p>
+
+<h3 id="Outroas">Outroas</h3>
+
+<p><em>No change.</em></p>
+
+<h2 id="Veja_também"><span class="short_text" id="result_box" lang="pt"><span>Veja também</span></span></h2>
+
+<ul>
+ <li><a href="https://www.fxsitecompat.com/en-US/versions/50">Site Compatibility for Firefox 50</a></li>
+</ul>
+
+<h2 id="Versões_mais_antigas"><span class="short_text" id="result_box" lang="pt"><span>Versões mais antigas</span></span></h2>
+
+<p>{{Firefox_for_developers(49)}}</p>
diff --git a/files/pt-br/mozilla/firefox/releases/57/index.html b/files/pt-br/mozilla/firefox/releases/57/index.html
new file mode 100644
index 0000000000..3d579a546e
--- /dev/null
+++ b/files/pt-br/mozilla/firefox/releases/57/index.html
@@ -0,0 +1,301 @@
+---
+title: Firefox Quantum 57 for developers
+slug: Mozilla/Firefox/Releases/57
+translation_of: Mozilla/Firefox/Releases/57
+---
+<div>{{FirefoxSidebar}}</div>
+
+<div>This article provides information about the changes in Firefox 57 (a.k.a. Firefox Quantum) that will affect developers. Firefox 57 was released on November 14, 2017.</div>
+
+<div> </div>
+
+<h2 id="Firefox_57_Firefox_Quantum">Firefox 57 === Firefox Quantum</h2>
+
+<p>O Firefox 57 recebeu o nome de lançamento <strong>Quantum</strong>, após o projeto de engenharia Firefox <a href="https://wiki.mozilla.org/Quantum">Quantum</a> que tem como objetivo reconstruir o Firefox a partir do zero, trazendo consigo grande desempenho, estabilidade e melhorias visuais. This is the first version of Firefox to ship some of these improvements, so we wanted to mark the occasion.</p>
+
+<div class="blockIndicator note">
+<p><strong>Nota:</strong> Para ler mais sobre os recursos do Quantum nesta versão, veja: <a href="https://hacks.mozilla.org/2017/09/firefox-quantum-developer-edition-fastest-firefox-ever/">Firefox Quantum Developer Edition: the fastest Firefox ever with Photon UI and better tooling</a> por Dan Callahan.</p>
+</div>
+
+<p><a href="https://hacks.mozilla.org/2017/08/inside-a-super-fast-css-engine-quantum-css-aka-stylo/">Firefox's new parallel CSS engine</a> — também conhecido como <strong>Quantum CSS</strong> ou <strong>Stylo</strong> ─ está habilitado por padrão no Firefox 57 para desktop, com versões móveis do Firefox para seguir mais tarde. Os desenvolvedores não devem notar nada significativamente diferente, além de toda uma série de melhorias de desempenho. Existem, no entanto, algumas pequenas diferenças funcionais no Stylo, implementado para corrigir o comportamento não padronizado do Gecko que deve ser eliminado. Nos reportaremos tais diferenças nas páginas de referência e nas notas de lançamento conforme apropriado (veja {{anch("Quantum CSS notes")}}).</p>
+
+<h2 id="Changes_for_Web_developers">Changes for Web developers</h2>
+
+<h3 id="Ferramentas_de_desenvolvimento">Ferramentas de desenvolvimento</h3>
+
+<p>Sem mudanças.</p>
+
+<h3 id="HTML">HTML</h3>
+
+<ul>
+ <li>Os types {{htmlelement("input")}} <a href="/pt-BR/docs/Web/HTML/Element/Input/data">date</a> e <a href="/pt-BR/docs/Web/HTML/Element/Input/time">time</a> agora estão habilitados em todos builds. ({{bug("1399036")}})</li>
+</ul>
+
+<h3 id="CSS">CSS</h3>
+
+<ul>
+ <li>Os valores <code>minimal-ui</code> e <code>standalone</code> do media query <a href="/pt-BR/docs/Web/CSS/@media/display-mode">display-mode</a> agora são suportados ({{bug(1369815)}}). Veja também o <a href="/pt-BR/docs/Web/Manifest#display">Web app manifest <code>display</code> field</a>.</li>
+ <li>As propriedades {{CSSxRef("grid-row-gap")}} e {{CSSxRef("grid-column-gap")}} não são mais redefinidas pelo {{CSSxRef("grid")}} de forma abreviada ({{bug(1387410)}}).</li>
+ <li>A preferência <code>layout.css.clip-path-shapes.enabled</code> foi removida ({{bug(1399767)}}). Esta preferência permite desabilitar a {{CSSxRef("&lt;basic-shape&gt;")}} suportado em {{CSSxRef("clip-path")}}. Este suporte foi enviado no Firefox 54 e não pode mais ser desativado.</li>
+</ul>
+
+<h4 id="Quantum_CSS_notes">Quantum CSS notes</h4>
+
+<p>Following bugs have been fixed in Quantum:</p>
+
+<ul>
+ <li>Radial gradient values like <code>radial-gradient(circle gold,red)</code> will work in the old Gecko style system, even though they shouldn't because of the missing comma between <code>circle</code> and <code>gold</code> ({{bug(1383323)}}). </li>
+ <li>When you animate an offscreen element onscreen but specify a delay, Gecko does not repaint on some platforms, e.g. Windows ({{bug(1383239)}}). </li>
+ <li>In Gecko, {{htmlelement("details")}} elements can't be made open by default using the <code>open</code> attribute if they have an {{CSSxRef("animation")}} active on them ({{bug(1382124)}}).</li>
+ <li>In Gecko, {{CSSxRef("transition", "transitions")}} will not work when transitioning from a {{CSSxRef("text-shadow")}} with a color specified to a <code>text-shadow</code> without a color specified  ({{bug(726550)}}).</li>
+ <li>In Gecko, cancelling a filling animation (e.g. with <code>animation-fill-mode: forwards</code> set) can trigger a transition set on the same element, although only once (see {{bug(1192592)}} and <a href="https://bug1192592.bmoattachments.org/attachment.cgi?id=8843824">these test cases</a> for more information). In general declarative animations should not trigger transitions. </li>
+ <li>Animations using em units are not affected by changes to the {{CSSxRef("font-size")}} on the animated element's parent in Gecko, whereas they should be ({{bug(1254424)}}). </li>
+ <li>Gecko also deals with <code>font-size</code> inheritance differently from Quantum CSS, meaning that for some language settings inherited font sizes end up being smaller than expected (see {{bug(1391341)}}). </li>
+ <li>Gecko reuses the same mechanism used when parsing a url-token when parsing the <code>domain()</code> or <code>url-prefix()</code> URL matching functions for a {{CSSxRef("@document", "@-moz-document")}} rule. Quantum CSS does not use the same mechanism and it does not consider tokens invalid when they contain brackets or quotes ({{bug(1362333)}}).</li>
+ <li>In Gecko, when you set a system font as the value of a canvas 2D context's {{DOMxRef("CanvasRenderingContext2D.font", "font")}} (e.g. <code>menu</code>), getting the font value fails to return the expected font (it returns nothing). This has been fixed in Quantum. ({{bug(1374885)}}).</li>
+ <li>In Gecko, when you create a detached subtree (e.g. a {{htmlelement("div")}} created using {{DOMxRef("Document.createElement","createElement()")}} that is not yet inserted into the DOM), the subtree's root element is set as a block-level element. In Quantum CSS this is set as inline, as per spec ({{bug(1374994)}}).</li>
+ <li>In Gecko, {{CSSxRef("calc")}} expressions are rejected — causing the value to be invalid — when used as the radius component of a {{CSSxRef("radial-gradient")}} function ({{bug(1376019)}}).</li>
+ <li>In Gecko, <code>calc(1*2*3)</code> is not parsed successfully; Quantum CSS fixes this ({{bug(1379467)}}).</li>
+ <li>In Quantum CSS, <a href="https://drafts.csswg.org/css-values-3/#calc-notation"><code>calc()</code> is supported everywhere that the spec explains it should be</a> ({{bug(1350857)}}). In Gecko it is not.</li>
+ <li>Gecko has a bug whereby the {{CSSxRef("::before")}} and {{CSSxRef("::after")}} pseudo-elements are still generated even if the {{CSSxRef("content")}} property value is set to <code>normal</code> or <code>none</code>. As per spec, they shouldn't be ({{bug(1387931)}}).</li>
+ <li>Another Gecko bug means that the {{CSSxRef("background-position")}} property can't be transitioned between two values containing different numbers of {{CSSxRef("&lt;position&gt;")}} values, for example <code>background-position: 10px 10px;</code> and <code>background-position: 20px 20px, 30px 30px;</code> (see {{bug(1390446)}}). </li>
+</ul>
+
+<h3 id="SVG">SVG</h3>
+
+<p>Sem mudanças.</p>
+
+<h3 id="JavaScript">JavaScript</h3>
+
+<ul>
+ <li>O não-padronizado {{JSxRef("Statements/for_each...in", "for each...in")}} (E4X) loop foi removido. Por favor, use o {{JSxRef("Statements/for...of", "for...of")}} ao invés disso e veja  <a href="/en-US/docs/Web/JavaScript/Reference/Errors/For-each-in_loops_are_deprecated">Warning: JavaScript 1.6's for-each-in loops are deprecated</a> para ajudar na migração. ({{bug(1083470)}}).</li>
+ <li>Os métodos  {{JSxRef("Object.prototype.watch()")}} e {{JSxRef("Object.unwatch", "unwatch()")}} estão descontinuados, agora lançará um alerta(warning) quando usado, e será removido em breve. ({{bug(934669)}}).</li>
+ <li>Os objetos não-padronizados Iterator e StopIteration assim como o protocolo de iteração legado foram removidos ({{bug(1098412)}}).</li>
+ <li>Async generator está agora ativado. ({{bug(1352312)}}).</li>
+ <li>A sintaxe for await (...of...) está agora ativado. ({{bug(1352312)}}).</li>
+</ul>
+
+<h4 id="Novas_APIs">Novas APIs</h4>
+
+<ul>
+ <li>A {{DOMxRef("PerformanceObserver")}} está habilitado por padrão(default). ({{bug(1386021)}}).</li>
+ <li>As interfaces {{DOMxRef("AbortController")}} e {{DOMxRef("AbortSignal")}} (conhecidos como o Abort API) foram adicionados, permitindo requisições DOM (tal como<a href="/pt-BR/docs/Web/API/WindowOrWorkerGlobalScope/fetch"> fetch requests</a>) ser abortado se desejar. ({{bug(1378342)}}).</li>
+ <li>[2] O <a href="/pt-BR/docs/Web/API/Storage_API">Storage API</a> está implementado e habilitado por padrão(default). ({{bug(1399038)}}).</li>
+</ul>
+
+<h4 id="DOM">DOM</h4>
+
+<ul>
+ <li>A propriedade {{DOMxRef("Selection.type")}} do <a href="/pt-BR/docs/Web/API/Selection_API">Selection API</a> está agora implementado ({{bug(1359157)}}).</li>
+ <li>{{DOMxRef("Document.createEvent", "Document.createEvent('FocusEvent')")}} está agora implementado ({{bug(1388069)}}).</li>
+ <li>A propriedade <code>files</code> da interface {{DOMxRef("HTMLInputElement")}} está agora definível ({{bug(1384030)}}).</li>
+ <li>O método <code>HTMLDocument.getSelection()</code> foi movido para a interface {{DOMxRef("Document.getSelection","Document")}}, por isso está disponível para documentos XML ({{bug(718711)}}).</li>
+ <li>O evento {{Event("messageerror")}} está agora implementado e pode ter código executado em resposta a disparar através de manipuladores de eventos implementados em destinos de mensagens ─ Veja {{DOMxRef("MessagePort.onmessageerror")}}, {{DOMxRef("DedicatedWorkerGlobalScope.onmessageerror")}}, {{DOMxRef("Worker.onmessageerror")}}, {{DOMxRef("BroadcastChannel.onmessageerror")}}, e {{DOMxRef("Window.onmessageerror")}} ({{bug(1359017)}}).</li>
+ <li>Quando os valores do {{DOMxRef("Headers")}} são iterados, eles são automaticamente classificados em ordem lexicográfico e valores de nomes de cabeçalho duplicados são combinados ({{bug(1396848)}}).</li>
+</ul>
+
+<h4 id="DOM_events">DOM events</h4>
+
+<p>Sem mudanças.</p>
+
+<h4 id="Media_and_WebRTC">Media and WebRTC</h4>
+
+<ul>
+ <li>Suporte para mensagens de tamanho arbitrário (até 1GiB, apesar de 256kiB é mais interoperável) está agora suportados em {{DOMxRef("RTCDataChannel")}} através do uso da flag end-of-record (EOR) em messagens SCTP. Veja {{SectionOnPage("/en-US/docs/Web/API/WebRTC_API/Using_data_channels", "Understanding message size limits")}} para mais informações ({{bug(979417)}}).
+  <div class="blockIndicator note">
+  <p>Porque o Firefox ainda não suporta o protocolo SCTP ndata que fornece a       capacidade de intercalar mensagens SCTP de múltiplas fontes, o envio de objetos de dados grandes pode causar atrasos significativos em todos os outros tráfegos SCTP. Veja {{bug(1381145)}} para acompanhar o progresso na implementação e implementação do suporte a ndata no Firefox.</p>
+  </div>
+ </li>
+ <li>O método {{DOMxRef("RTCDataChannel.send()")}} pode agora lançar uma exceção <code>TypeError</code> se o tamanho da mensagem que você está tentando enviar não é compatível com o recebimento {{Glossary("user agent")}} (Isto está implementado como parte do {{bug(979417)}}).</li>
+ <li>O <a href="/pt-BR/docs/Web/API/MediaStream_Recording_API">MediaStream Recording API</a> foi atualizado, assim, os eventos de {{event("error")}} enviados para relatar problemas que ocorrem durante a gravação agora são do tipo {{DOMxRef("MediaRecorderErrorEvent")}}, em vez de serem eventos genéricos.</li>
+ <li>Atualizado a documentação ao redor {{DOMxRef("OfflineAudioContext")}} desde o seu campos construtores pode agora se especificado ao invés de uma lista de parâmetros ({{bug(1388591)}}).</li>
+ <li>O <a href="/pt-BR/docs/Web/API/API_Web_Audio">Web Audio API</a> agora suporta corretamente a saída multicanal ({{bug(1378070)}}).</li>
+</ul>
+
+<h3 id="Security">Security</h3>
+
+<ul>
+ <li>URLs <code>resources://</code> não mais vazar informações ({{bug(863246)}}).</li>
+ <li>Data URIs agora são tratados como origens opacas únicas, em vez de herdar a origem do objeto de configuração responsável pela navegação ({{bug(1324406)}}).</li>
+</ul>
+
+<h3 id="Plugins">Plugins</h3>
+
+<p>Sem mudanças.</p>
+
+<h3 id="Outros">Outros</h3>
+
+<ul>
+ <li>Firefox <a href="/pt-BR/docs/Mozilla/Firefox/Headless_mode">headless mode</a> agora incluídos uma flag <code>-screenshot</code> que permite você pegar screenshots de website diretamente da linha de comando ({{bug(1378010)}}).</li>
+</ul>
+
+<h2 id="Removals_from_the_web_platform">Removals from the web platform</h2>
+
+<h3 id="HTML_2">HTML</h3>
+
+<ul>
+ <li><code>&lt;link rel=”preload”&gt;</code> (see <a href="/pt-BR/docs/Web/HTML/Preloading_content">Preloading content with rel="preload"</a>) foi desabilitado no Firefox 57 por causa de vários problemas de compatibilidade da web (por exemplo {{bug(1405761)}}). Espera-se que uma versão melhorada que funcione para recursos não armazenáveis ​​em cache chegue ao Firefox 58.</li>
+</ul>
+
+<h3 id="APIs">APIs</h3>
+
+<ul>
+ <li>Propriedade da Mozilla <a href="/pt-BR/docs/Archive/Social_API">Social API</a> foi completamente removido ({{bug(1388902)}}).</li>
+</ul>
+
+<h3 id="SVG_2">SVG</h3>
+
+<p>Sem mudanças.</p>
+
+<h2 id="Alterações_para_add-on_e_desenvolvedores_Mozilla">Alterações para add-on e desenvolvedores Mozilla</h2>
+
+<div class="blockIndicator note">
+<p>Começando no Firefox 57, todo suporte para XPCOM-based add-ons foi removido. Todas as extensões devem ser convertidas no novo <a href="/pt-BR/Add-ons/WebExtensions">browser extensions</a> (também conhecido como WebExtensions) ou eles não vão funcionar.</p>
+</div>
+
+<h3 id="WebExtensions">WebExtensions</h3>
+
+<p>As seguintes APIs foram adicionadas ou estendidas:</p>
+
+<p> </p>
+
+<ul>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/bookmarks">bookmarks</a></code>
+
+  <ul>
+   <li>support for separators through <code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/bookmarks/BookmarkTreeNodeType">bookmarks.BookmarkTreeNodeType</a></code></li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/manifest.json/browser_action">browser_action</a></code>
+  <ul>
+   <li><code>theme_icons</code> property for light/dark theme icons</li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browserAction">browserAction</a></code>
+  <ul>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browserAction/openPopup">browserAction.openPopup()</a></code></li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browserSettings">browserSettings</a></code>
+  <ul>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browserSettings/allowPopupsForUserEvents">allowPopupsForUserEvents</a></code></li>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browserSettings/homepageOverride">homepageOverride</a></code></li>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browserSettings/imageAnimationBehavior">imageAnimationBehavior</a></code></li>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browserSettings/newTabPageOverride">newTabPageOverride</a></code></li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browsingData">browsingData</a></code>
+  <ul>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browsingData/removeLocalStorage">browsingData.removeLocalStorage()</a></code></li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/clipboard">clipboard</a></code>
+  <ul>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/clipboard/setImageData">setImageData()</a></code></li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/contextualIdentities">contextualIdentities</a></code>
+  <ul>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/contextualIdentities/onCreated">onCreated</a></code></li>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/contextualIdentities/onRemoved">onRemoved</a></code></li>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/contextualIdentities/onUpdated">onUpdated</a></code></li>
+   <li><code>colorCode</code> and <code>iconUrl</code> in <code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/contextualIdentities/ContextualIdentity">contextualIdentitities.ContextualIdentity</a></code></li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/devtools.panels">devtools.panels</a></code>
+  <ul>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/devtools.panels/ElementsPanel/createSidebarPane">devtools.panels.ElementsPanel.createSidebarPane()</a></code></li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/downloads">downloads</a></code>
+  <ul>
+   <li><code>incognito</code> option in <code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/downloads/download">downloads.download()</a></code></li>
+   <li><code>estimatedEndTime</code> property in <code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/downloads/DownloadItem">downloads.DownloadItem</a></code></li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/Add-ons/WebExtensions/API/find">find</a></code>
+  <ul>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/find/find">find()</a></code></li>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/find/highlightResults">highlightResults()</a></code></li>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/find/removeHighlighting">removeHighlighting()</a></code></li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/pageAction/openPopup">pageAction.openPopup()</a></code></li>
+ <li><code><a href="/en-US/Add-ons/WebExtensions/API/privacy/websites">privacy</a></code>
+  <ul>
+   <li><code><a href="/en-US/Add-ons/WebExtensions/API/privacy/websites">websites.trackingProtectionMode</a></code></li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/proxy">proxy</a></code>
+  <ul>
+   <li><code>FindProxyForURL()</code> can now return an object</li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/runtime">runtime</a></code>
+  <ul>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/runtime/openOptionsPage">runtime.openOptionsPage()</a></code> support on Android</li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/sessions">sessions</a></code>
+  <ul>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/sessions/setTabValue">setTabValue()</a></code></li>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/sessions/getTabValue">getTabValue()</a></code></li>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/sessions/removeTabValue">removeTabValue()</a></code></li>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/sessions/setWindowValue">setWindowValue()</a></code></li>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/sessions/getWindowValue">getWindowValue()</a></code></li>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/sessions/removeWindowValue">removeWindowValue()</a></code></li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/sidebarAction">sidebarAction</a></code>
+  <ul>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/sidebarAction/open">sidebarAction.open()</a></code></li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/storage">storage</a></code>
+  <ul>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/storage/managed">storage.managed</a></code></li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs">tabs</a></code>
+  <ul>
+   <li><code>loadReplace</code> option in <code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/update">tabs.update()</a></code></li>
+   <li><code>discarded</code> property in <code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/Tab">tabs.Tab</a></code>, <code><a href="/en-US/docs/">tabs.onUpdated</a></code>, and <code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/query">tabs.query()</a></code></li>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/create">tabs.create()</a></code> can open "view-source:" URLs</li>
+   <li><code>openerTabId</code> property in <code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/Tab">tabs.Tab</a></code>, <code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/create">tabs.create()</a></code>, <code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/query">tabs.query()</a></code>, and <code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/update">tabs.update()</a></code></li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/manifest.json/theme">theme</a></code>
+  <ul>
+   <li><code>colors.toolbar</code></li>
+   <li><code>colors.toolbar_field</code></li>
+   <li><code>colors.toolbar_field_text</code></li>
+   <li><code>colors.toolbar_text</code></li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/theme">theme</a></code>
+  <ul>
+   <li><code>windowId</code> option to <code><a href="/en-US/Add-ons/WebExtensions/API/theme/update">theme.update()</a></code></li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/webRequest">webRequest</a></code>
+  <ul>
+   <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/webRequest/filterResponseData">filterResponseData()</a></code></li>
+   <li><code>proxyInfo</code> property in <code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/webRequest">webRequest</a></code> events</li>
+  </ul>
+ </li>
+ <li><code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/windows">windows</a></code>
+  <ul>
+   <li><code>allowScriptsToClose</code> option in <code><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/windows/create">windows.create()</a></code></li>
+  </ul>
+ </li>
+</ul>
+
+<h2 id="Veja_também">Veja também</h2>
+
+<ul>
+ <li><a href="https://www.fxsitecompat.com/en-US/versions/57">Site Compatibility for Firefox 57</a></li>
+</ul>
+
+<h2 id="Versões_anteriores">Versões anteriores</h2>
+
+<p>{{Firefox_for_developers(56)}}</p>
diff --git a/files/pt-br/mozilla/firefox/releases/65/index.html b/files/pt-br/mozilla/firefox/releases/65/index.html
new file mode 100644
index 0000000000..4583bcb8f5
--- /dev/null
+++ b/files/pt-br/mozilla/firefox/releases/65/index.html
@@ -0,0 +1,110 @@
+---
+title: Firefox 65 for developers
+slug: Mozilla/Firefox/Releases/65
+translation_of: Mozilla/Firefox/Releases/65
+---
+<div>{{FirefoxSidebar}}{{Draft}}</div>
+
+<p class="summary">Este artigo fornece informações sobre as alterações no Firefox 65 que afetarão os desenvolvedores. Firefox 65 é a atual versão <a href="https://www.mozilla.org/en-US/firefox/channel/desktop/#beta" rel="noopener">Nightly do Firefox</a>, e será lançada em <a href="https://wiki.mozilla.org/RapidRelease/Calendar#Future_branch_dates" rel="noopener">29 de Janeiro, 2019</a>.</p>
+
+<h2 id="Mudanças_para_desenvolvedores_da_web">Mudanças para desenvolvedores da web</h2>
+
+<h3 id="Ferramentas_de_desenvolvimento">Ferramentas de desenvolvimento</h3>
+
+<h4 id="Remoções">Remoções</h4>
+
+<h3 id="HTML">HTML</h3>
+
+<p><em>No changes.</em></p>
+
+<h4 id="Removals">Removals</h4>
+
+<h3 id="CSS">CSS</h3>
+
+<ul>
+ <li>The {{cssxref("image-rendering")}} property's <code>crisp-edges</code> value has now been unprefixed ({{bug(1496617)}}).</li>
+ <li>A {{cssxref("scrollbar-color")}} value of <code>auto</code> now resolves to <code>auto</code>, rather than two colors ({{bug(1501418)}}).</li>
+</ul>
+
+<h4 id="Removals_2">Removals</h4>
+
+<p>The <code>layout.css.shape-outside.enabled</code> pref has been removed; {{cssxref("shape-outside")}}, {{cssxref("shape-margin")}}, and {{cssxref("shape-image-threshold")}} can no longer be disabled ({{bug(1504387)}}).</p>
+
+<h3 id="SVG">SVG</h3>
+
+<p><em>No changes.</em></p>
+
+<h4 id="Removals_3">Removals</h4>
+
+<h3 id="JavaScript">JavaScript</h3>
+
+<h4 id="Removals_4">Removals</h4>
+
+<h3 id="APIs">APIs</h3>
+
+<p><em>No changes.</em></p>
+
+<h4 id="New_APIs">New APIs</h4>
+
+<h4 id="DOM">DOM</h4>
+
+<p>{{domxref("Performance.toJSON()")}} has been exposed to <a href="/en-US/docs/Web/API/Web_Workers_API">Web Workers</a> ({{bug(1504958)}}).</p>
+
+<h4 id="DOM_events">DOM events</h4>
+
+<h4 id="Service_workers">Service workers</h4>
+
+<p>The {{domxref("Response.redirect()")}} method now correctly throws a <code>TypeError</code> if a non-valid URL is specified as the first parameter ({{bug(1503276)}}).</p>
+
+<h4 id="Media_Web_Audio_and_WebRTC">Media, Web Audio, and WebRTC</h4>
+
+<ul>
+ <li>Support for <a href="/en-US/docs/Glossary/webp">WebP</a> files has been added (<a class="external external-icon" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1294490" rel="noopener" title="FIXED: Implement WebP image support">bug 1294490</a>).</li>
+</ul>
+
+<h4 id="Canvas_and_WebGL">Canvas and WebGL</h4>
+
+<h4 id="Removals_5">Removals</h4>
+
+<ul>
+ <li><a href="/en-US/docs/Web/Guide/Events/Mutation_events">Mutation events</a> have been disabled on shadow trees ({{bug(1489858)}}).</li>
+ <li>The non-standard {{domxref("MediaStream")}} property <code>currentTime</code> has been removed ({{bug(1502927)}}).</li>
+</ul>
+
+<h3 id="Security">Security</h3>
+
+<p><em>No changes.</em></p>
+
+<h4 id="Removals_6">Removals</h4>
+
+<h3 id="Plugins">Plugins</h3>
+
+<p><em>No changes.</em></p>
+
+<h4 id="Removals_7">Removals</h4>
+
+<h3 id="Other">Other</h3>
+
+<p><em>No changes.</em></p>
+
+<h4 id="Removals_8">Removals</h4>
+
+<h2 id="Changes_for_add-on_developers">Changes for add-on developers</h2>
+
+<h3 id="API_changes">API changes</h3>
+
+<h4 id="Removals_9">Removals</h4>
+
+<h3 id="Manifest_changes">Manifest changes</h3>
+
+<h4 id="Removals_10">Removals</h4>
+
+<h2 id="See_also">See also</h2>
+
+<ul>
+ <li><a href="https://www.fxsitecompat.com/en-CA/versions/65/">Site compatibility for Firefox 65</a></li>
+</ul>
+
+<h2 id="Older_versions">Older versions</h2>
+
+<p>{{Firefox_for_developers(65)}}</p>
diff --git a/files/pt-br/mozilla/firefox/releases/index.html b/files/pt-br/mozilla/firefox/releases/index.html
new file mode 100644
index 0000000000..c6a7dd1bf2
--- /dev/null
+++ b/files/pt-br/mozilla/firefox/releases/index.html
@@ -0,0 +1,8 @@
+---
+title: Notas de lançamento do Firefox para o desenvolvedor
+slug: Mozilla/Firefox/Releases
+translation_of: Mozilla/Firefox/Releases
+---
+<div>{{FirefoxSidebar}}</div><p>Esta página fornece links para artigos  "Firefox X para desenvolvedores"  para cada versão do Firefox. Estas notas permitem ver que recursos foram adicionados e os erros eliminados em cada versão do Firefox.</p>
+
+<div class="multiColumnList">{{ListSubpages("",1,1,1)}}</div>