How it works
Puppeteer launches a browser, usually headless (with no visible window), and gives you an API to open pages, click, type, run scripts in the page, intercept network requests and capture the result. page.pdf() turns a web page into a PDF using its print styles, which makes it a common way to generate invoices and reports from HTML templates.
It talks to Chrome over the Chrome DevTools Protocol and to Firefox over the WebDriver BiDi standard. It is a library rather than a test framework, with no test runner, parallel runs or reports built in, so for end-to-end testing Playwright, which the original Puppeteer authors went on to build, is the closer fit. Running it on serverless platforms needs a slimmed-down Chromium build.
Puppeteer pros and cons
Pros
- Direct, fine-grained control of Chrome through DevTools
- Reliable HTML-to-PDF and screenshot generation
- Small API that is quick to learn for automation scripts
Cons
- No test runner, assertions or reports; you add your own
- JavaScript only, and mainly focused on Chrome
- Heavy for serverless: Chromium is large and slow to start
When to use Puppeteer
Pick it when
- Generating PDFs, screenshots or social images from HTML
- Scraping and automating tasks in Chrome
- Scripts that need Chrome DevTools features directly
Skip it when
- A full end-to-end test suite, where Playwright or Cypress fit better
Puppeteer pricing
Puppeteer vs the alternatives
- pdf-lib vs @react-pdf/renderer vs PuppeteerThree common ways to produce PDFs with JavaScript: draw on PDF pages directly, describe the document with React components, or print a real web page in a headless browser.
- Playwright vs Cypress vs PuppeteerAll three control real browsers. Playwright and Cypress are built for end-to-end testing; Puppeteer is a lower-level automation library that is often used for PDFs and scraping.
Related terms
More in Testing and quality
Browser testing and automation