puppeteer/website/versioned_docs/version-22.9.0/guides/what-is-puppeteer.md

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# What is Puppeteer?
Puppeteer is a Node.js library which provides a high-level API to control
Chrome/Chromium over the
[DevTools Protocol](https://chromedevtools.github.io/devtools-protocol/).
Puppeteer runs in
[headless](https://developer.chrome.com/docs/chromium/new-headless/)
mode by default, but can be configured to run in full ("headful")
Chrome/Chromium.
# Features
Most things that you can do manually in the browser can be done using Puppeteer!
Here are a few examples to get you started:
- Automate form submission, UI testing, keyboard input, etc.
- Create an automated testing environment using the latest JavaScript and
browser features.
- Capture a
[timeline trace](https://developer.chrome.com/docs/devtools/performance/reference)
of your site to help diagnose performance issues.
- [Test Chrome Extensions](https://pptr.dev/guides/chrome-extensions).
- Generate screenshots and PDFs of pages.
- Crawl a SPA (Single-Page Application) and generate pre-rendered content (i.e.
"SSR" (Server-Side Rendering)).