Puppeteer

Puppeteer is a Node.js library that provides a high-level API to control Chrome or Chromium over the DevTools protocol. Puppeteer runs headless by default, but can be configured to run full (non-headless) Chrome or Chromium.

Features

• Generate screenshots and PDFs of pages.
• Crawl a SPA (Single-Page Application) and generate pre-rendered content (i.e. "SSR" (Server-Side Rendering)).
• Automate form submission, UI testing, keyboard input, etc.
• Create an up-to-date, automated testing environment. Run end-to-end tests with Chrome to ensure that your application is working correctly.
• Capture a timeline trace of your site to help diagnose performance issues.

Getting Started

To get started, install Puppeteer via NPM:

npm i puppeteer

Then, create a new Puppeteer instance and start using the API:

const puppeteer = require('puppeteer');

(async () => {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  const url = 'https://example.com';
  await page.goto(url);
  await page.screenshot({ path: 'example.png' });

  browser.close();
})();

This will launch Chromium, navigate to https://example.com, and take a screenshot of the page.

Conclusion

Puppeteer is a powerful tool for automating and testing web applications. With its many features and easy-to-use API, it is a must-have for any serious web developer. If you haven't already, give Puppeteer a try and see how it can improve your workflow.