puppeteer/website/versioned_docs/version-19.8.0/api/puppeteer.launchoptions.md

---
sidebar_label: LaunchOptions
---

# LaunchOptions interface

Generic launch options that can be passed when launching any browser.

#### Signature:

```typescript
export interface LaunchOptions
```

## Properties

| Property                                                               | Modifiers | Type                                                        | Description                                                                                                                                                                                                                                        | Default                                   |
| ---------------------------------------------------------------------- | --------- | ----------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------- |
| [channel?](./puppeteer.launchoptions.channel.md)                       |           | [ChromeReleaseChannel](./puppeteer.chromereleasechannel.md) | _(Optional)_ Chrome Release Channel                                                                                                                                                                                                                |                                           |
| [dumpio?](./puppeteer.launchoptions.dumpio.md)                         |           | boolean                                                     | _(Optional)_ If true, pipes the browser process stdout and stderr to <code>process.stdout</code> and <code>process.stderr</code>.                                                                                                                  | false                                     |
| [env?](./puppeteer.launchoptions.env.md)                               |           | Record&lt;string, string \| undefined&gt;                   | _(Optional)_ Specify environment variables that will be visible to the browser.                                                                                                                                                                    | The contents of <code>process.env</code>. |
| [executablePath?](./puppeteer.launchoptions.executablepath.md)         |           | string                                                      | _(Optional)_ Path to a browser executable to use instead of the bundled Chromium. Note that Puppeteer is only guaranteed to work with the bundled Chromium, so use this setting at your own risk.                                                  |                                           |
| [extraPrefsFirefox?](./puppeteer.launchoptions.extraprefsfirefox.md)   |           | Record&lt;string, unknown&gt;                               | _(Optional)_ [Additional preferences](https://searchfox.org/mozilla-release/source/modules/libpref/init/all.js) that can be passed when launching with Firefox.                                                                                    |                                           |
| [handleSIGHUP?](./puppeteer.launchoptions.handlesighup.md)             |           | boolean                                                     | _(Optional)_ Close the browser process on <code>SIGHUP</code>.                                                                                                                                                                                     | <code>true</code>                         |
| [handleSIGINT?](./puppeteer.launchoptions.handlesigint.md)             |           | boolean                                                     | _(Optional)_ Close the browser process on <code>Ctrl+C</code>.                                                                                                                                                                                     | <code>true</code>                         |
| [handleSIGTERM?](./puppeteer.launchoptions.handlesigterm.md)           |           | boolean                                                     | _(Optional)_ Close the browser process on <code>SIGTERM</code>.                                                                                                                                                                                    | <code>true</code>                         |
| [ignoreDefaultArgs?](./puppeteer.launchoptions.ignoredefaultargs.md)   |           | boolean \| string\[\]                                       | _(Optional)_ If <code>true</code>, do not use <code>puppeteer.defaultArgs()</code> when creating a browser. If an array is provided, these args will be filtered out. Use this with care - you probably want the default arguments Puppeteer uses. | false                                     |
| [pipe?](./puppeteer.launchoptions.pipe.md)                             |           | boolean                                                     | _(Optional)_ Connect to a browser over a pipe instead of a WebSocket.                                                                                                                                                                              | false                                     |
| [product?](./puppeteer.launchoptions.product.md)                       |           | [Product](./puppeteer.product.md)                           | _(Optional)_ Which browser to launch.                                                                                                                                                                                                              | <code>chrome</code>                       |
| [timeout?](./puppeteer.launchoptions.timeout.md)                       |           | number                                                      | _(Optional)_ Maximum time in milliseconds to wait for the browser to start. Pass <code>0</code> to disable the timeout.                                                                                                                            | 30000 (30 seconds).                       |
| [waitForInitialPage?](./puppeteer.launchoptions.waitforinitialpage.md) |           | boolean                                                     | _(Optional)_ Whether to wait for the initial page to be ready. Useful when a user explicitly disables that (e.g. <code>--no-startup-window</code> for Chrome).                                                                                     | true                                      |