[Home](./index.md) > [puppeteer](./puppeteer.md) > [LaunchOptions](./puppeteer.launchoptions.md) ## LaunchOptions interface Generic launch options that can be passed when launching any browser. Signature: ```typescript export interface LaunchOptions ``` ## Properties | Property | Type | Description | | --- | --- | --- | | [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 process.stdout and process.stderr. | | [env?](./puppeteer.launchoptions.env.md) | Record<string, string \| undefined> | (Optional) Specify environment variables that will be visible to the browser. | | [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<string, unknown> | (Optional) [Additional preferences](https://developer.mozilla.org/en-US/docs/Mozilla/Preferences/Preference_reference) that can be passed when launching with Firefox. | | [handleSIGHUP?](./puppeteer.launchoptions.handlesighup.md) | boolean | (Optional) Close the browser process on SIGHUP. | | [handleSIGINT?](./puppeteer.launchoptions.handlesigint.md) | boolean | (Optional) Close the browser process on Ctrl+C. | | [handleSIGTERM?](./puppeteer.launchoptions.handlesigterm.md) | boolean | (Optional) Close the browser process on SIGTERM. | | [ignoreDefaultArgs?](./puppeteer.launchoptions.ignoredefaultargs.md) | boolean \| string\[\] | (Optional) If true, do not use puppeteer.defaultArgs() 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. | | [pipe?](./puppeteer.launchoptions.pipe.md) | boolean | (Optional) Connect to a browser over a pipe instead of a WebSocket. | | [product?](./puppeteer.launchoptions.product.md) | [Product](./puppeteer.product.md) | (Optional) Which browser to launch. | | [timeout?](./puppeteer.launchoptions.timeout.md) | number | (Optional) Maximum time in milliseconds to wait for the browser to start. Pass 0 to disable the timeout. | | [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. --no-startup-window for Chrome). |