Browse recent website audits and performance trends

Explore technology stacks detected across the web

Side-by-side technology comparisons and market share

Curated technology stacks and the sites that use them

Editorial deep-dives on the state of web performance

Browse and download favicons from analyzed websites

Common questions about BeaverCheck scores and checks

How we calculate scores across 100+ checks

The story behind BeaverCheck and the team

Practical guides to fix common web performance issues

Step-by-step guides for moving between web technologies

Definitions for performance, SEO, and web platform terms

Check WCAG color contrast ratios between any two colors

Inspect HTTP response headers for any URL

Analyze SSL/TLS certificate details and chain

Look up DNS records for any domain

Trace the full redirect chain for any URL

Real-user INP and Core Web Vitals from Google's Chrome UX Report.

RESTful API for programmatic website audits

Embed an auto-updating health score badge on your site

4 websites using Donorbox

All websites detected using Donorbox, ranked by composite performance score. Live data from BeaverCheck audits.

Domain	Score	Perf	Last audited
letsencrypt.org	B 84	73	Apr 4, 2026
lencr.org	B 80	92	Apr 16, 2026
donorbox.org	C 79	41	Apr 22, 2026
libretexts.org	C 75	66	Apr 22, 2026

Send Feedback