Revision 1025478 of Remote Debugging

<p>You can use the <a href="/en-US/docs/Tools">Firefox developer tools</a> on your desktop to debug Web sites and Web apps running in other browsers or runtimes. The other browser might be on the same device as the tools themselves or on a different device, such as a phone connected over USB.</p>

<p>The detailed instructions for connecting the developer tools are specific to the runtime.</p>

<h2 id="Gecko-based_runtimes">Gecko-based runtimes</h2>

<p>In the first place, you can connect the developer tools to Gecko-based runtimes like Firefox Desktop, Firefox for Android, Firefox OS, and Thunderbird.</p>

<ul>
 <li><a href="/en-US/docs/Tools/Remote_Debugging/Debugging_Firefox_Desktop">Firefox Desktop</a></li>
 <li>Firefox for Android
  <ul>
   <li><a href="/en-US/docs/Tools/Remote_Debugging/Debugging_Firefox_for_Android_with_WebIDE">over USB</a></li>
   <li><a href="/en-US/docs/Tools/Remote_Debugging/Debugging_Firefox_for_Android_over_Wifi">over WiFi</a></li>
  </ul>
 </li>
 <li>Firefox OS
  <ul>
   <li><a href="/en-US/docs/Tools/Remote_Debugging/Debugging_Firefox_OS_over_USB">over USB</a></li>
   <li><a href="/en-US/docs/Tools/Remote_Debugging/Debugging_Firefox_OS_over_Wifi">over WiFi</a></li>
  </ul>
 </li>
 <li><a href="/en-US/docs/Tools/Remote_Debugging/Thunderbird">Thunderbird</a></li>
</ul>

<h2 id="Other_runtimes">Other runtimes</h2>

<p>The experimental <a href="/en-US/docs/Tools/Valence">Valence</a> add-on enables you to debug Web sites in runtimes that are not based on Gecko, like Google Chrome Desktop, Chrome on Android, and Safari on iOS.</p>

<p>Valence is included by default in <a href="/en-US/Firefox/Developer_Edition">Firefox Developer Edition</a>.</p>

<ul>
 <li><a href="/en-US/docs/Tools/Valence">Chrome for Android</a></li>
 <li><a href="/en-US/docs/Tools/Remote_Debugging/Chrome_Desktop">Chrome Desktop</a></li>
 <li><a href="/en-US/docs/Tools/Valence">Safari on iOS</a></li>
</ul>