This Github repository has recipes for automating Web Performance measurement with Puppeteer.
- Get a DevTools performance trace for a page load
- Get a DevTools trace with screenshots
- Get a DevTools trace and extract filmstrip screenshots
- Get a DevTools trace for a user interaction
- Get Runtime performance metrics
- Generate a Lighthouse report
- Extract Lighthouse performance metrics
- Emulate a slow network
- Emulate a slow network and CPU
- Test your site renders with JavaScript disabled
- Get Navigation Timing API metrics
- Measure First Paint and First Contentful Paint
- Measure Largest Contentful Paint w/PerformanceObserver
- Measure Cumulative Layout Shift w/PerformanceObserver
- Measure SPA metrics with Next.js
- Get DevTools-specific metrics: Frames Per Second
- Measure memory leaks
- Override requests with Request Interception
- Block third-party domains
- Code Coverage for JavaScript and CSS
- Save network requests to a HAR file
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