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---
title: devtools.inspectedWindow
slug: Mozilla/Add-ons/WebExtensions/API/devtools.inspectedWindow
translation_of: Mozilla/Add-ons/WebExtensions/API/devtools.inspectedWindow
---
<div>{{AddonSidebar}}</div>

<div class="note">
<p>This page describes the WebExtensions devtools APIs as they exist in Firefox 54. Although the APIs are based on the <a href="https://developer.chrome.com/extensions/devtools">Chrome devtools APIs</a>, there are still many features that are not yet implemented in Firefox, and therefore are not documented here. To see which features are currently missing please see <a href="/en-US/Add-ons/WebExtensions/Using_the_devtools_APIs#Limitations_of_the_devtools_APIs">Limitations of the devtools APIs</a>.</p>
</div>

<p>The <code>devtools.inspectedWindow</code> API lets a devtools extension interact with the window that the developer tools are attached to.</p>

<p>Like all the <code>devtools</code> APIs, this API is only available to code running in the document defined in the <a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/manifest.json/devtools_page">devtools_page</a> manifest.json key, or in other devtools documents created by the extension (such as the document hosted by a panel the extension created). See <a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/Extending_the_developer_tools">Extending the developer tools</a> for more.</p>

<h2 id="Properties">Properties</h2>

<dl>
 <dt><code><a href="/en-US/Add-ons/WebExtensions/API/devtools.inspectedWindow/tabId">devtools.inspectedWindow.tabId</a></code></dt>
 <dd>The ID of the window that the developer tools are attached to.</dd>
</dl>

<h2 id="Functions">Functions</h2>

<dl>
 <dt><code><a href="/en-US/Add-ons/WebExtensions/API/devtools.inspectedWindow/eval">devtools.inspectedWindow.eval()</a></code></dt>
 <dd>Evaluate some JavaScript in the target window.</dd>
 <dt><code><a href="/en-US/Add-ons/WebExtensions/API/devtools.inspectedWindow/reload">devtools.inspectedWindow.reload()</a></code></dt>
 <dd>Reload the target window's document.</dd>
</dl>

<h2 id="Browser_compatibility">Browser compatibility</h2>

<p>{{Compat("webextensions.api.devtools.inspectedWindow")}}{{WebExtExamples("h2")}}</p>

<div class="note"><strong>Acknowledgements</strong>

<p>This API is based on Chromium's <a href="https://developer.chrome.com/extensions/devtools_inspectedWindow"><code>chrome.devtools.inspectedWindow</code></a> API.</p>

<p>Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.</p>
</div>

<div class="hidden">
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