Preparing your workspace
Optimize page speed, Core Web Vitals, brotli assets, rendering streams, and preload trees.
Learn about Google's Core Web Vitals metrics: Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), and Interaction to Next Paint (INP).
Understand TTFB, First Contentful Paint, Speed Index, and how network roundtrips affect speed.
Learn how to configure Cache-Control directives, ETags, and validation headers to control browser caching.
Practical guides to compressing payloads with gzip/brotli, lazy loading, and asset optimization.
Understand how browsers parse HTML and CSS to render paint frames on user screens.
Test and inspect Performance configurations in real time with zero setup.
Inspect live Cache-Control, ETag, and Expires response headers.