---
title: Add-on SDK
slug: Mozilla/Add-ons/SDK
tags:
  - Add-on SDK
  - Jetpack
translation_of: Archive/Add-ons/Add-on_SDK
---
<div class="warning">
<p>Support for extensions using XUL/XPCOM or the Add-on SDK was removed in Firefox 57, released November 2017. As there is no supported version of Firefox enabling these technologies, this page will be removed by December 2020.</p>

<p>Add-ons using the techniques described in this document are considered a legacy technology in Firefox. Don't use these techniques to develop new add-ons. Use <a href="/en-US/Add-ons/WebExtensions">WebExtensions</a> instead. If you maintain an add-on which uses the techniques described here, consider migrating it to use WebExtensions.</p>

<p><strong>Starting from <a href="https://wiki.mozilla.org/RapidRelease/Calendar">Firefox 53</a>, no new legacy add-ons will be accepted on addons.mozilla.org (AMO) for desktop Firefox and Firefox for Android.</strong></p>

<p><strong>Starting from <a href="https://wiki.mozilla.org/RapidRelease/Calendar">Firefox 57</a>, only extensions developed using WebExtensions APIs will be supported on Desktop Firefox and Firefox for Android. </strong></p>

<p>Even before Firefox 57, changes coming up in the Firefox platform will break many legacy extensions. These changes include multiprocess Firefox (e10s), sandboxing, and multiple content processes. Legacy extensions that are affected by these changes should migrate to use WebExtensions APIs if they can. See the <a href="https://blog.mozilla.org/addons/2017/02/16/the-road-to-firefox-57-compatibility-milestones/">"Compatibility Milestones" document</a> for more information.</p>

<p>A wiki page containing <a href="https://wiki.mozilla.org/Add-ons/developer/communication">resources, migration paths, office hours, and more</a>, is available to help developers transition to the new technologies.</p>
</div>
<p>Pode criar extras do Firefox utilizando <strong><u>Add-on SDK</u></strong>. Pode utilizar várias tecnologias da Web padrão: CSS, HTML e JavaScript, para criar os extras. O SDK inclui as APIs de JavaScript APIs, que pode utilziar para criar extras e ferramentas para a criação, execução, testes, e empacotamento dos extras.</p>

<hr>
<h3 id="Tutoriais"><a href="/en-US/Add-ons/SDK/Tutorials">Tutoriais</a></h3>

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<dl>
 <dt><a href="/en-US/Add-ons/SDK/Tutorials#getting-started">Getting started</a></dt>
 <dd>How to <a href="/en-US/Add-ons/SDK/Tutorials/Installation">install the SDK</a> and <a href="/en-US/Add-ons/SDK/Tutorials/Getting_Started_(jpm)">use the jpm tool</a> to develop, test, and package add-ons.</dd>
 <dt><a href="/en-US/Add-ons/SDK/Tutorials#interact-with-the-browser">Interact with the browser</a></dt>
 <dd><a href="/en-US/Add-ons/SDK/Tutorials/Open_a_Web_Page">Open web pages</a>, <a href="/en-US/Add-ons/SDK/Tutorials/Listen_For_Page_Load">listen for pages loading</a> and <a href="/en-US/Add-ons/SDK/Tutorials/List_Open_Tabs">list open pages</a>.</dd>
 <dt><a href="/en-US/Add-ons/SDK/Tutorials#development-techniques">Development techniques</a></dt>
 <dd>Learn about common development techniques, such as <a href="/en-US/Add-ons/SDK/Tutorials/Unit_testing">unit testing</a>, <a href="/en-US/Add-ons/SDK/Tutorials/Logging">logging</a>, <a href="/en-US/Add-ons/SDK/Tutorials/Creating_Reusable_Modules">creating reusable modules</a>, <a href="/en-US/Add-ons/SDK/Tutorials/l10n">localization</a>, and <a href="/en-US/Add-ons/SDK/Tutorials/Mobile_development">mobile development</a>.</dd>
</dl>
</div>

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<dl>
 <dt><a href="/en-US/Add-ons/SDK/Tutorials#create-user-interfaces">Create user interface components</a></dt>
 <dd>Create user interface components such as <a href="/en-US/Add-ons/SDK/Tutorials/Adding_a_Button_to_the_Toolbar">toolbar buttons</a>, <a href="/en-US/Add-ons/SDK/Tutorials/Add_a_Context_Menu_Item">context menus</a>, <a href="/en-US/Add-ons/SDK/Tutorials/Add_a_Menu_Item_to_Firefox">menu items</a>, and <a href="/en-US/Add-ons/SDK/Tutorials/Display_a_Popup">dialogs</a>.</dd>
 <dt><a href="/en-US/Add-ons/SDK/Tutorials#modify-web-pages">Modify web pages</a></dt>
 <dd>Modify pages <a href="/en-US/Add-ons/SDK/Tutorials/Modifying_Web_Pages_Based_on_URL">matching a URL pattern</a> or dynamically <a href="/en-US/Add-ons/SDK/Tutorials/Modifying_the_Page_Hosted_by_a_Tab">modify a particular tab</a>.</dd>
 <dt><a href="/en-US/Add-ons/SDK/Tutorials/Annotator">Putting it together</a></dt>
 <dd>Walkthrough of the Annotator example add-on.</dd>
</dl>
</div>
</div>

<hr>
<h3 id="Guias">Guias</h3>

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<dl>
 <dt><a href="/en-US/Add-ons/SDK/Guides#contributors-guide">Contributor's guide</a></dt>
 <dd>Learn <a href="/en-US/Add-ons/SDK/Guides/Getting_Started">how to start contributing</a> to the SDK and about the most important idioms used in the SDK code such as <a href="/en-US/Add-ons/SDK/Guides/Modules">modules</a>, <a href="/en-US/Add-ons/SDK/Guides/Classes_and_Inheritance">classes and inheritance</a>, <a href="/en-US/Add-ons/SDK/Guides/Private_Properties">private properties</a>, and <a href="/en-US/Add-ons/SDK/Guides/Content_Processes">content processes</a>.</dd>
 <dt><a href="/en-US/Add-ons/SDK/Guides#sdk-infrastructure">SDK infrastructure</a></dt>
 <dd>Aspects of the SDK's underlying technology: <a href="/en-US/Add-ons/SDK/Guides/Module_structure_of_the_SDK">modules</a>, the <a href="/en-US/Add-ons/SDK/Guides/Program_ID">Program ID</a> and the rules defining <a href="/en-US/Add-ons/SDK/Guides/Firefox_Compatibility">Firefox compatibility</a>.</dd>
 <dt><a href="/en-US/Add-ons/SDK/Guides/Content_Scripts">Content scripts</a></dt>
 <dd>A detailed guide to working with content scripts.</dd>
</dl>
</div>

<div class="column-half">
<dl>
 <dt><a href="/en-US/Add-ons/SDK/Guides#sdk-idioms">SDK idioms</a></dt>
 <dd>The SDK's <a href="/en-US/Add-ons/SDK/Guides/Working_with_Events">event framework</a> and the <a href="/en-US/Add-ons/SDK/Guides/Two_Types_of_Scripts">distinction between add-on scripts and content scripts</a>.</dd>
 <dt><a href="/en-US/Add-ons/SDK/Guides/XUL_Migration_Guide">XUL migration</a></dt>
 <dd>A guide to <a href="/en-US/Add-ons/SDK/Guides/XUL_Migration_Guide">porting XUL add-ons to the SDK</a>. This guide includes a <a href="/en-US/Add-ons/SDK/Guides/XUL_vs_SDK">comparison of the two toolsets</a> and a <a href="/en-US/Add-ons/SDK/Guides/Porting_the_Library_Detector">working example</a> of porting a XUL add-on.</dd>
 <dt><a href="/en-US/Add-ons/SDK/Guides/Multiprocess_Firefox_and_the_SDK">Multiprocess Firefox and the SDK</a></dt>
 <dd>How to check whether your add-on is compatible with multiprocess Firefox or not and fix it accordingly.</dd>
</dl>
</div>
</div>

<hr>
<h3 id="Referência">Referência</h3>

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<dl>
 <dt><a href="/en-US/Add-ons/SDK/High-Level_APIs">High-Level APIs</a></dt>
 <dd>Reference documentation for the high-level SDK APIs.</dd>
 <dt><a href="/en-US/Add-ons/SDK/Tools">Tools reference</a></dt>
 <dd>Reference documentation for the <a href="/en-US/Add-ons/SDK/Tools/jpm">jpm tool</a> used to develop, test and package add-ons, the <a href="/en-US/Add-ons/SDK/Tools/console">console</a> global used for logging, and the <a href="/en-US/Add-ons/SDK/Tools/package_json">package.json</a> file.</dd>
</dl>
</div>

<div class="column-half">
<dl>
 <dt><a href="/en-US/Add-ons/SDK/Low-Level_APIs">Low-Level APIs</a></dt>
 <dd>Reference documentation for the low-level SDK APIs.</dd>
</dl>
</div>
</div>