---
title: devtools.panels
slug: Mozilla/Add-ons/WebExtensions/API/devtools.panels
tags:
  - API
  - Extensões
  - Extensões da Web
  - Extras
  - Referencia
  - devtools.panels
translation_of: Mozilla/Add-ons/WebExtensions/API/devtools.panels
---
<div>{{AddonSidebar}}</div>

<div class="note">
<p>Embora as APIs sejam baseadas no <a href="https://developer.chrome.com/extensions/devtools">Chrome devtools APIs</a>, ainda existem muitas funcionalidades que ainda não estão implementadas no Firefox, e por isso, não estão documentadas aqui. Para ver quais as funcionalidades que estão atualmente em falta, por favor, consulte <a href="/pt-PT/Add-ons/WebExtensions/Extensão_das_ferramentas_de_desenvolvimento#Limitações_das_APIs_de_devtools">Limitações das APIs de devtools</a>.</p>
</div>

<p>The <code>devtools.panels</code> API lets a devtools extension define its user interface inside the devtools window.</p>

<p>The devtools window hosts a number of separate tools - the JavaScript Debugger, Network Monitor, and so on. A row of tabs across the top lets the user switch between the different tools. The window hosting each tool's user interface is called a "panel".</p>

<p>With the <code>devtools.panels</code> API you can create new panels in the devtools window.</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 panel's own document). See <a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/Extending_the_developer_tools">Extending the developer tools</a> for more.</p>

<h2 id="Tipos">Tipos</h2>

<dl>
 <dt><code><a href="/en-US/Add-ons/WebExtensions/API/devtools.panels/ElementsPanel">devtools.panels.ElementsPanel</a></code></dt>
 <dd>Represents the HTML/CSS inspector in the browser's devtools.</dd>
 <dt><code><a href="/en-US/Add-ons/WebExtensions/API/devtools.panels/ExtensionPanel">devtools.panels.ExtensionPanel</a></code></dt>
 <dd>Represents a devtools panel created by the extension.</dd>
 <dt><code><a href="/en-US/Add-ons/WebExtensions/API/devtools.panels/ExtensionSidebarPane">devtools.panels.ExtensionSidebarPane</a></code></dt>
 <dd>Represents a pane that an extension has added to the HTML/CSS inspector in the browser's devtools.</dd>
</dl>

<h2 id="Propriedades">Propriedades</h2>

<dl>
 <dt><code><a href="/en-US/Add-ons/WebExtensions/API/devtools.panels/elements">devtools.panels.elements</a></code></dt>
 <dd>A reference to an <code><a href="/en-US/Add-ons/WebExtensions/API/devtools.panels/ElementsPanel">ElementsPanel</a></code> object.</dd>
 <dt><code><a href="/en-US/Add-ons/WebExtensions/API/devtools.panels/themeName">devtools.panels.themeName</a></code></dt>
 <dd>The name of the current devtools theme.</dd>
</dl>

<h2 id="Funções">Funções</h2>

<dl>
 <dt><code><a href="/en-US/Add-ons/WebExtensions/API/devtools.panels/create">devtools.panels.create()</a></code></dt>
 <dd>Creates a new devtools panel.</dd>
</dl>

<h2 id="Eventos">Eventos</h2>

<dl>
 <dt><code><a href="/en-US/Add-ons/WebExtensions/API/devtools.panels/onThemeChanged">devtools.panels.onThemeChanged</a></code></dt>
 <dd>Fired when the devtools theme changes.</dd>
</dl>

<h2 id="Compatibilidade_do_navegador">Compatibilidade do navegador</h2>

<p>{{Compat("webextensions.api.devtools.panels", 2)}}</p>

<p>{{WebExtExamples("h2")}}</p>

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

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