About The Project

Lightpanda is the open-source browser made for headless usage:

• Javascript execution
• Support of Web APIs (partial, WIP)
• Compatible with Playwright, Puppeteer through CDP (WIP)

Fast web automation for AI agents, LLM training, scraping and testing:

• Ultra-low memory footprint (9x less than Chrome)
• Exceptionally fast execution (11x faster than Chrome)
• Instant startup

Puppeteer requesting 100 pages from a local website on a AWS EC2 m5.large instance. See benchmark details.

Getting Started

Configuration

Environment variables

• LIGHTPANDA_EXECUTABLE_PATH can be specified if you want to use your own version and avoid the binary from being installed on postinstall. The default folder is ~/.cache/lightpanda-node

Install

When installing the package, the binary corresponding to your platform will be automatically downloaded. If your OS is not supported, download will fail

yarn add @lightpanda/browser

or

npm install @lightpanda/browser

or

pnpm add @lightpanda/browser

Upgrade browser

At some point in time, you might want to upgrade Lightpanda browser to a more recent version. To do so, you can run the following command:

npx @lightpanda/browser upgrade

Examples

Fetch a page

With Lightpanda you can easily get a page's data by calling the fetch() function.

import { type LightpandaFetchOptions, lightpanda } from '@lightpanda/browser'

const options: LightpandaFetchOptions = {
  dump: true,
  disableHostVerification: false,
  httpProxy: 'https://proxy.lightpanda.io',
}
const res = await lightpanda.fetch('https://lightpanda.io', options)

// Do your magic ✨

Start a CDP Server

The websocket will allow you to control the browser and do a series of actions on webpages.

import { type LightpandaServeOptions, lightpanda } from '@lightpanda/browser'

const options: LightpandaServeOptions = {
  host: '127.0.0.1',
  port: 9222,
}
const proc = await lightpanda.serve(options)

// Do your magic ✨

proc.stdout.destroy()
proc.stderr.destroy()
proc.kill()

ℹ️ Lightpanda's CDP server can be used alongside projects like Puppeteer or Playwright.