puppeteer

name	puppeteer
description	Puppeteer headless Chrome automation. Use for browser automation.

Puppeteer

Puppeteer is a Node library which provides a high-level API to control Chrome or Chromium over the DevTools Protocol.

When to Use

• Chrome Specific: If testing cross-browser isn't a priority (or you only care about Chromium).
• Web Scraping: Excellent for scraping SPAs because it renders JS.
• PDF/Screenshots: The industry standard for "HTML to PDF" generation.

Quick Start

import puppeteer from "puppeteer";

(async () => {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  await page.goto("https://developer.chrome.com/");
  await page.pdf({ path: "dv.pdf", format: "A4" });

  await browser.close();
})();

Core Concepts

DevTools Protocol (CDP)

Puppeteer talks directly to Chrome via CDP. This allows deeper control (intercepting network at a low level, CPU profiling) than WebDriver.