puppeteer/website/versioned_docs/version-21.0.3/browsers-api/index.md
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---
sidebar_label: API
---
# @puppeteer/browsers
Manage and launch browsers/drivers from a CLI or programmatically.
## CLI
Use `npx` to run the CLI:
```bash
npx @puppeteer/browsers --help
```
CLI help will provide all documentation you need to use the CLI.
```bash
npx @puppeteer/browsers --help # help for all commands
npx @puppeteer/browsers install --help # help for the install command
npx @puppeteer/browsers launch --help # help for the launch command
```
## Known limitations
1. We support installing and running Firefox, Chrome and Chromium. The `latest`, `beta`, `dev`, `canary`, `stable` keywords are only supported for the install command. For the `launch` command you need to specify an exact build ID. The build ID is provided by the `install` command (see `npx @puppeteer/browsers install --help` for the format).
2. Launching the system browsers is only possible for Chrome/Chromium.
## API
The programmatic API allows installing and launching browsers from your code. See the `test` folder for examples on how to use the `install`, `canInstall`, `launch`, `computeExecutablePath`, `computeSystemExecutablePath` and other methods.
## Classes
| Class | Description |
| -------------------------------------------------- | ----------- |
| [CLI](./browsers.cli.md) | |
| [InstalledBrowser](./browsers.installedbrowser.md) | |
| [Process](./browsers.process.md) | |
| [TimeoutError](./browsers.timeouterror.md) | |
## Enumerations
| Enumeration | Description |
| ---------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------ |
| [Browser](./browsers.browser.md) | Supported browsers. |
| [BrowserPlatform](./browsers.browserplatform.md) | Platform names used to identify a OS platfrom x architecture combination in the way that is relevant for the browser download. |
| [ChromeReleaseChannel](./browsers.chromereleasechannel.md) | |
## Functions
| Function | Description |
| --------------------------------------------------------------------------------- | ----------------------------------------------------------------- |
| [canDownload(options)](./browsers.candownload.md) | |
| [computeExecutablePath(options)](./browsers.computeexecutablepath.md) | |
| [computeSystemExecutablePath(options)](./browsers.computesystemexecutablepath.md) | |
| [createProfile(browser, opts)](./browsers.createprofile.md) | |
| [detectBrowserPlatform()](./browsers.detectbrowserplatform.md) | |
| [getInstalledBrowsers(options)](./browsers.getinstalledbrowsers.md) | Returns metadata about browsers installed in the cache directory. |
| [install(options)](./browsers.install.md) | |
| [install(options)](./browsers.install_1.md) | |
| [launch(opts)](./browsers.launch.md) | |
| [makeProgressCallback(browser, buildId)](./browsers.makeprogresscallback.md) | |
| [resolveBuildId(browser, platform, tag)](./browsers.resolvebuildid.md) | |
| [uninstall(options)](./browsers.uninstall.md) | |
## Interfaces
| Interface | Description |
| ------------------------------------------------------------------------ | ----------- |
| [GetInstalledBrowsersOptions](./browsers.getinstalledbrowsersoptions.md) | |
| [InstallOptions](./browsers.installoptions.md) | |
| [LaunchOptions](./browsers.launchoptions.md) | |
| [Options](./browsers.options.md) | |
| [ProfileOptions](./browsers.profileoptions.md) | |
| [SystemOptions](./browsers.systemoptions.md) | |
| [UninstallOptions](./browsers.uninstalloptions.md) | |
## Variables
| Variable | Description |
| ------------------------------------------------------------------------------------------------ | ----------- |
| [CDP_WEBSOCKET_ENDPOINT_REGEX](./browsers.cdp_websocket_endpoint_regex.md) | |
| [WEBDRIVER_BIDI_WEBSOCKET_ENDPOINT_REGEX](./browsers.webdriver_bidi_websocket_endpoint_regex.md) | |