puppeteer/new-docs/puppeteer.browser.md

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[Home](./index.md) &gt; [puppeteer](./puppeteer.md) &gt; [Browser](./puppeteer.browser.md)

## Browser class

A Browser is created when Puppeteer connects to a Chromium instance, either through [Puppeteer.launch()](./puppeteer.puppeteer.launch.md) or [Puppeteer.connect()](./puppeteer.puppeteer.connect.md)<!-- -->.

<b>Signature:</b>

```typescript
export declare class Browser extends EventEmitter 
```
<b>Extends:</b> [EventEmitter](./puppeteer.eventemitter.md)

## Remarks

The constructor for this class is marked as internal. Third-party code should not call the constructor directly or create subclasses that extend the `Browser` class.

## Example 1

An example of using a [Browser](./puppeteer.browser.md) to create a [Page](./puppeteer.page.md)<!-- -->:

```js
const puppeteer = require('puppeteer');

(async () => {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  await page.goto('https://example.com');
  await browser.close();
})();

```

## Example 2

An example of disconnecting from and reconnecting to a [Browser](./puppeteer.browser.md)<!-- -->:

```js
const puppeteer = require('puppeteer');

(async () => {
  const browser = await puppeteer.launch();
  // Store the endpoint to be able to reconnect to Chromium
  const browserWSEndpoint = browser.wsEndpoint();
  // Disconnect puppeteer from Chromium
  browser.disconnect();

  // Use the endpoint to reestablish a connection
  const browser2 = await puppeteer.connect({browserWSEndpoint});
  // Close Chromium
  await browser2.close();
})();

```

## Methods

|  Method | Modifiers | Description |
|  --- | --- | --- |
|  [browserContexts()](./puppeteer.browser.browsercontexts.md) |  | Returns an array of all open browser contexts. In a newly created browser, this will return a single instance of [BrowserContext](./puppeteer.browsercontext.md)<!-- -->. |
|  [close()](./puppeteer.browser.close.md) |  | Closes Chromium and all of its pages (if any were opened). The [Browser](./puppeteer.browser.md) object itself is considered to be disposed and cannot be used anymore. |
|  [createIncognitoBrowserContext()](./puppeteer.browser.createincognitobrowsercontext.md) |  | Creates a new incognito browser context. This won't share cookies/cache with other browser contexts. |
|  [defaultBrowserContext()](./puppeteer.browser.defaultbrowsercontext.md) |  | Returns the default browser context. The default browser context cannot be closed. |
|  [disconnect()](./puppeteer.browser.disconnect.md) |  | Disconnects Puppeteer from the browser, but leaves the Chromium process running. After calling <code>disconnect</code>, the [Browser](./puppeteer.browser.md) object is considered disposed and cannot be used anymore. |
|  [isConnected()](./puppeteer.browser.isconnected.md) |  | Indicates that the browser is connected. |
|  [newPage()](./puppeteer.browser.newpage.md) |  | Creates a [Page](./puppeteer.page.md) in the default browser context. |
|  [pages()](./puppeteer.browser.pages.md) |  | An array of all open pages inside the Browser. |
|  [process()](./puppeteer.browser.process.md) |  | The spawned browser process. Returns <code>null</code> if the browser instance was created with [Puppeteer.connect()](./puppeteer.puppeteer.connect.md)<!-- -->. |
|  [target()](./puppeteer.browser.target.md) |  | The target associated with the browser. |
|  [targets()](./puppeteer.browser.targets.md) |  | All active targets inside the Browser. In case of multiple browser contexts, returns an array with all the targets in all browser contexts. |
|  [userAgent()](./puppeteer.browser.useragent.md) |  | The browser's original user agent. Pages can override the browser user agent with [Page.setUserAgent()](./puppeteer.page.setuseragent.md)<!-- -->. |
|  [version()](./puppeteer.browser.version.md) |  | A string representing the browser name and version. |
|  [waitForTarget(predicate, options)](./puppeteer.browser.waitfortarget.md) |  | Searches for a target in all browser contexts. |
|  [wsEndpoint()](./puppeteer.browser.wsendpoint.md) |  | The browser websocket endpoint which can be used as an argument to [Puppeteer.connect()](./puppeteer.puppeteer.connect.md)<!-- -->. |