puppeteer/docs/api/puppeteer.launchoptions.md

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---
sidebar_label: LaunchOptions
---
# LaunchOptions interface
Generic launch options that can be passed when launching any browser.
#### Signature:
2022-07-05 13:41:43 +00:00
```typescript
export interface LaunchOptions
```
## Properties
| Property | Modifiers | Type | Description | Default |
| ------------------ | --------------------- | ----------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------- |
| channel | <code>optional</code> | [ChromeReleaseChannel](./puppeteer.chromereleasechannel.md) | Chrome Release Channel | |
| dumpio | <code>optional</code> | boolean | If true, pipes the browser process stdout and stderr to <code>process.stdout</code> and <code>process.stderr</code>. | <code>false</code> |
| env | <code>optional</code> | Record&lt;string, string \| undefined&gt; | Specify environment variables that will be visible to the browser. | The contents of <code>process.env</code>. |
| executablePath | <code>optional</code> | string | 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 | <code>optional</code> | Record&lt;string, unknown&gt; | [Additional preferences](https://searchfox.org/mozilla-release/source/modules/libpref/init/all.js) that can be passed when launching with Firefox. | |
| handleSIGHUP | <code>optional</code> | boolean | Close the browser process on <code>SIGHUP</code>. | <code>true</code> |
| handleSIGINT | <code>optional</code> | boolean | Close the browser process on <code>Ctrl+C</code>. | <code>true</code> |
| handleSIGTERM | <code>optional</code> | boolean | Close the browser process on <code>SIGTERM</code>. | <code>true</code> |
| ignoreDefaultArgs | <code>optional</code> | boolean \| string\[\] | 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. | <code>false</code> |
| pipe | <code>optional</code> | boolean | Connect to a browser over a pipe instead of a WebSocket. | <code>false</code> |
| product | <code>optional</code> | [Product](./puppeteer.product.md) | Which browser to launch. | <code>chrome</code> |
| timeout | <code>optional</code> | number | Maximum time in milliseconds to wait for the browser to start. Pass <code>0</code> to disable the timeout. | <code>30_000</code> (30 seconds). |
| waitForInitialPage | <code>optional</code> | boolean | 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). | <code>true</code> |