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<title data-rh="true">Browser class | Puppeteer</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://pptr.dev/next/api/puppeteer.browser"><meta data-rh="true" property="og:locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docsearch:counter" content="3"><meta data-rh="true" property="og:title" content="Browser class | Puppeteer"><meta data-rh="true" name="description" content="Browser represents a browser instance that is either:"><meta data-rh="true" property="og:description" content="Browser represents a browser instance that is either:"><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://pptr.dev/next/api/puppeteer.browser"><link data-rh="true" rel="alternate" href="https://pptr.dev/next/api/puppeteer.browser" hreflang="en"><link data-rh="true" rel="alternate" href="https://pptr.dev/next/api/puppeteer.browser" hreflang="x-default"><link data-rh="true" rel="preconnect" href="https://DVKY664LG7-dsn.algolia.net" crossorigin="anonymous"><link rel="search" type="application/opensearchdescription+xml" title="Puppeteer" href="/opensearch.xml">
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<p><a href="/next/api/puppeteer.browser">Browser</a> represents a browser instance that is either:</p>
<ul>
<li>connected to via <a href="/next/api/puppeteer.puppeteer.connect">Puppeteer.connect()</a> or - launched by <a href="/next/api/puppeteer.puppeteernode.launch">PuppeteerNode.launch()</a>.</li>
</ul>
<p><a href="/next/api/puppeteer.browser">Browser</a> <a href="/next/api/puppeteer.eventemitter">emits</a> various events which are documented in the <a href="/next/api/puppeteer.browserevent">BrowserEvent</a> enum.</p>
<h4 class="anchor anchorWithStickyNavbar_LWe7" id="signature">Signature:<a href="#signature" class="hash-link" aria-label="Direct link to Signature:" title="Direct link to Signature:"></a></h4>
<div class="language-typescript codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-typescript codeBlock_bY9V thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#00009f">export</span><span class="token plain"> </span><span class="token keyword" style="color:#00009f">declare</span><span class="token plain"> </span><span class="token keyword" style="color:#00009f">abstract</span><span class="token plain"> </span><span class="token keyword" style="color:#00009f">class</span><span class="token plain"> </span><span class="token class-name">Browser</span><span class="token plain"> </span><span class="token keyword" style="color:#00009f">extends</span><span class="token plain"> </span><span class="token class-name">EventEmitter</span><span class="token class-name operator" style="color:#393A34">&lt;</span><span class="token class-name">BrowserEvents</span><span class="token class-name operator" style="color:#393A34">&gt;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>
<p><strong>Extends:</strong> <a href="/next/api/puppeteer.eventemitter">EventEmitter</a>&lt;<a href="/next/api/puppeteer.browserevents">BrowserEvents</a>&gt;</p>
<h2 class="anchor anchorWithStickyNavbar_LWe7" id="remarks">Remarks<a href="#remarks" class="hash-link" aria-label="Direct link to Remarks" title="Direct link to Remarks"></a></h2>
<p>The constructor for this class is marked as internal. Third-party code should not call the constructor directly or create subclasses that extend the <code>Browser</code> class.</p>
<h2 class="anchor anchorWithStickyNavbar_LWe7" id="example-1">Example 1<a href="#example-1" class="hash-link" aria-label="Direct link to Example 1" title="Direct link to Example 1"></a></h2>
<p>Using a <a href="/next/api/puppeteer.browser">Browser</a> to create a <a href="/next/api/puppeteer.page">Page</a>:</p>
<div class="language-ts codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-ts codeBlock_bY9V thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#00009f">import</span><span class="token plain"> puppeteer </span><span class="token keyword" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&#x27;puppeteer&#x27;</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> browser </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword" style="color:#00009f">await</span><span class="token plain"> puppeteer</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#d73a49">launch</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> page </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword" style="color:#00009f">await</span><span class="token plain"> browser</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#d73a49">newPage</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">await</span><span class="token plain"> page</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#d73a49">goto</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">&#x27;https://example.com&#x27;</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">await</span><span class="token plain"> browser</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#d73a49">close</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>
<h2 class="anchor anchorWithStickyNavbar_LWe7" id="example-2">Example 2<a href="#example-2" class="hash-link" aria-label="Direct link to Example 2" title="Direct link to Example 2"></a></h2>
<p>Disconnecting from and reconnecting to a <a href="/next/api/puppeteer.browser">Browser</a>:</p>
<div class="language-ts codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-ts codeBlock_bY9V thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#00009f">import</span><span class="token plain"> puppeteer </span><span class="token keyword" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&#x27;puppeteer&#x27;</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> browser </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword" style="color:#00009f">await</span><span class="token plain"> puppeteer</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#d73a49">launch</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">// Store the endpoint to be able to reconnect to the browser.</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> browserWSEndpoint </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> browser</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#d73a49">wsEndpoint</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">// Disconnect puppeteer from the browser.</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">await</span><span class="token plain"> browser</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#d73a49">disconnect</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">// Use the endpoint to reestablish a connection</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> browser2 </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword" style="color:#00009f">await</span><span class="token plain"> puppeteer</span><span class="token punctuation" sty
<h2 class="anchor anchorWithStickyNavbar_LWe7" id="properties">Properties<a href="#properties" class="hash-link" aria-label="Direct link to Properties" title="Direct link to Properties"></a></h2>
<table><thead><tr><th>Property</th><th>Modifiers</th><th>Type</th><th>Description</th></tr></thead><tbody><tr><td>connected</td><td><code>readonly</code></td><td>boolean</td><td>Whether Puppeteer is connected to this <a href="/next/api/puppeteer.browser">browser</a>.</td></tr></tbody></table>
<h2 class="anchor anchorWithStickyNavbar_LWe7" id="methods">Methods<a href="#methods" class="hash-link" aria-label="Direct link to Methods" title="Direct link to Methods"></a></h2>
<table><thead><tr><th>Method</th><th>Modifiers</th><th>Description</th></tr></thead><tbody><tr><td><a href="/next/api/puppeteer.browser.browsercontexts">browserContexts()</a></td><td></td><td><p>Gets a list of open <a href="/next/api/puppeteer.browsercontext">browser contexts</a>.</p><p>In a newly-created <a href="/next/api/puppeteer.browser">browser</a>, this will return a single instance of <a href="/next/api/puppeteer.browsercontext">BrowserContext</a>.</p></td></tr><tr><td><a href="/next/api/puppeteer.browser.close">close()</a></td><td></td><td>Closes this <a href="/next/api/puppeteer.browser">browser</a> and all associated <a href="/next/api/puppeteer.page">pages</a>.</td></tr><tr><td><a href="/next/api/puppeteer.browser.createincognitobrowsercontext">createIncognitoBrowserContext(options)</a></td><td></td><td><p>Creates a new incognito <a href="/next/api/puppeteer.browsercontext">browser context</a>.</p><p>This won&#x27;t share cookies/cache with other <a href="/next/api/puppeteer.browsercontext">browser contexts</a>.</p></td></tr><tr><td><a href="/next/api/puppeteer.browser.defaultbrowsercontext">defaultBrowserContext()</a></td><td></td><td>Gets the default <a href="/next/api/puppeteer.browsercontext">browser context</a>.</td></tr><tr><td><a href="/next/api/puppeteer.browser.disconnect">disconnect()</a></td><td></td><td>Disconnects Puppeteer from this <a href="/next/api/puppeteer.browser">browser</a>, but leaves the process running.</td></tr><tr><td><a href="/next/api/puppeteer.browser.isconnected">isConnected()</a></td><td></td><td>Whether Puppeteer is connected to this <a href="/next/api/puppeteer.browser">browser</a>.</td></tr><tr><td><a href="/next/api/puppeteer.browser.newpage">newPage()</a></td><td></td><td>Creates a new <a href="/next/api/puppeteer.page">page</a> in the <a href="/next/api/puppeteer.browser.defaultbrowsercontext">default browser context</a>.</td></tr><tr><td><a href="/next/api/puppeteer.browser.pages">pages()</a></td><td></td><td><p>Gets a list of all open <a href="/next/api/puppeteer.page">pages</a> inside this <a href="/next/api/puppeteer.browser">Browser</a>.</p><p>If there ar multiple <a href="/next/api/puppeteer.browsercontext">browser contexts</a>, this returns all <a href="/next/api/puppeteer.page">pages</a> in all <a href="/next/api/puppeteer.browsercontext">browser contexts</a>.</p></td></tr><tr><td><a href="/next/api/puppeteer.browser.process">process()</a></td><td></td><td>Gets the associated <a href="https://nodejs.org/api/child_process.html#class-childprocess" target="_blank" rel="noopener noreferrer">ChildProcess</a>.</td></tr><tr><td><a href="/next/api/puppeteer.browser.target">target()</a></td><td></td><td>Gets the <a href="/next/api/puppeteer.target">target</a> associated with the <a href="/next/api/puppeteer.browser.defaultbrowsercontext">default browser context</a>).</td></tr><tr><td><a href="/next/api/puppeteer.browser.targets">targets()</a></td><td></td><td><p>Gets all active <a href="/next/api/puppeteer.target">targets</a>.</p><p>In case of multiple <a href="/next/api/puppeteer.browsercontext">browser contexts</a>, this returns all <a href="/next/api/puppeteer.target">targets</a> in all <a href="/next/api/puppeteer.browsercontext">browser contexts</a>.</p></td></tr><tr><td><a href="/next/api/puppeteer.browser.useragent">userAgent()</a></td><td></td><td><p>Gets this <a href="/next/api/puppeteer.browser">browser&#x27;s</a> original user agent.</p><p><a href="/next/api/puppeteer.page">Pages</a> can override the user agent with <a href="/next/api/puppeteer.page.setuseragent">Page.setUserAgent()</a>.</p></td></tr><tr><td><a href="/next/api/puppeteer.browser.version">version()</a></td><td></td><td><p>Gets a string representing this <a href="/next/api/puppeteer.browser">browser&#x27;s</a> name and version.</p><p>For headless browser, this is similar to <code>&quot;HeadlessChrome/61.0.3153.0&quot;</code>. For non-headless or new-headless, this is similar to <code>&quot;Chrome/61.0.3153.0&quot;</code>. For Firefox, it is similar to <code>&quot;Firefox/116.0a1&quot;</code>.</p><
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