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---
title: Developer Edition
slug: Mozilla/Firefox/Developer_Edition
tags:
- Beginner
- Firefox
- Landing
- NeedsTranslation
- TopicStub
- 'etichette{locale}'
translation_of: Mozilla/Firefox/Developer_Edition
---
<div>{{FirefoxSidebar}}</div><p style="text-align: center;"><img alt="" src="https://mdn.mozillademos.org/files/9143/firefox-dev-ed_logo-only_1024.png" style="display: block; height: 256px; margin-left: auto; margin-right: auto; width: 256px;">A version of Firefox that's tailored for web developers.</p>
<p><a href=" https://www.mozilla.org/en-US/firefox/developer/" style="width: 250px; display: block; margin-left: auto; margin-right: auto; padding: 10px; text-align: center; border-radius: 4px; 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;">Download Firefox Developer Edition</a></p>
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<h3 id="The_latest_Firefox_features"><strong>The latest Firefox features</strong></h3>
<p>Firefox Developer Edition replaces the Aurora channel in the <a href="https://wiki.mozilla.org/Release_Management/Release_Process">Firefox Release Process</a>. Like Aurora, features will land in the Developer Edition every six weeks, after they have stabilized in Nightly builds.</p>
<p>By using the Developer Edition, you gain access to tools and platform features at least 12 weeks before they reach the main Firefox release channel.</p>
<p><a href="/en-US/Firefox/Releases/35">Find out what's new in the Developer Edition</a>.</p>
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<h3 id="A_distinct_theme"><strong>A distinct theme</strong></h3>
<p>This includes quicker access to the developer tools.</p>
<h3 id="Experimental_developer_tools"><strong>Experimental developer tools</strong></h3>
<p>We'll include experimental tools that aren't yet ready to ride the trains to release.</p>
<p>For example, the Developer Edition includes the <a href="/en-US/docs/Tools/Valence">Valence add-on</a>, which enables you to connect the <a href="/en-US/docs/Tools">Firefox developer tools</a> to other browsers such as Chrome on Android and Safari on iOS.</p>
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<h3 id="A_separate_profile"><strong>A separate profile</strong></h3>
<p>Firefox Developer Edition uses a separate profile from other Firefox versions installed on your machine. This means you can easily run the Developer Edition alongside your release or Beta version of Firefox.</p>
<div class="note">
<p><strong>Note:</strong> This means that the first time you start up the Developer Edition, you will see a completely uncustomized browser, with no add-ons, bookmarks, or history. You can <a href="https://support.mozilla.org/en-US/kb/how-do-i-set-up-firefox-sync">use Firefox Sync</a> if you want to unify your settings between the Developer Edition and other editions of Firefox.</p>
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<h3 id="Set_up_for_web_developers"><strong>Set up for web developers</strong></h3>
<p>We've set default preference values tailored for web developers. For example, chrome and remote debugging are enabled by default.</p>
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<p> </p>
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