[Home](./index.md) > [puppeteer](./puppeteer.md) > [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).
Signature:
```typescript
export declare class Browser extends EventEmitter
```
Extends: [EventEmitter](./puppeteer.eventemitter.md)
## Remarks
The Browser class extends from Puppeteer's [EventEmitter](./puppeteer.eventemitter.md) class and will emit various events which are documented in the [BrowserEmittedEvents](./puppeteer.browseremittedevents.md) enum.
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 disconnect, 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 null 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). |