Front-end - 🟧Sourceful
Measure Core Web Vitals
A spreasheet with loading times for popular websites like Reddit, BBC, Twitch and other. Updated daily - you can see how the loading speed changes over time. Includes first contentful paint speed, time to interactive, etc.
Free Page Experience Tools (Core Web Vitals, HTTPs Usage, Safe Browsing, No Intrusive Interstitials)
Tools and guides to help you design great user experience on your site - includes resources to check and track how well you're doing on some of the core metrics.