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Browse & Analyze<br>HistoryBrowse recent website audits and performance trends
TechnologiesExplore technology stacks detected across the web
CompareSide-by-side technology comparisons and market share
StacksCurated technology stacks and the sites that use them
ReportsEditorial deep-dives on the state of web performance
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Learn<br>FAQCommon questions about BeaverCheck scores and checks
How We ScoreHow we calculate scores across 100+ checks
AboutThe story behind BeaverCheck and the team
LearnPractical guides to fix common web performance issues
Migration GuidesStep-by-step guides for moving between web technologies
GlossaryDefinitions for performance, SEO, and web platform terms
Contrast CheckerCheck WCAG color contrast ratios between any two colors
HTTP HeadersInspect HTTP response headers for any URL
SSL CheckerAnalyze SSL/TLS certificate details and chain
DNS LookupLook up DNS records for any domain
Redirect CheckerTrace the full redirect chain for any URL
INP CheckerReal-user INP and Core Web Vitals from Google's Chrome UX Report.
APIRESTful API for programmatic website audits
BadgeEmbed an auto-updating health score badge on your site
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Free Tools Contrast CheckerHTTP HeadersSSL CheckerDNS LookupRedirect CheckerINP Checker
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Free · No login · full audit in ~90 seconds<br>Free web audit tool<br>See what's wrong. Fix what matters.<br>Two full Lighthouse runs, mobile and desktop, plus 100+ checks scored across performance, security, accessibility, SEO, infrastructure, compliance, content and sustainability.<br>Detected technology stack matched against known CVEs. Findings ranked by impact with remediation cost, ROI and conversion barriers. Multi-viewport screenshots. Permanent shareable URL, and export as PDF, JSON or Markdown.<br>Website<br>example.com Run Audit Running 100+ checks on your site…
Advanced options Test from a specific location<br>Any location Brazil · Sao Paulo Netherlands · Amsterdam Singapore · Singapore Spain · Madrid United Stated · New York United States · Santa Clara
12,819 sites scanned · Try: github.com vercel.com stripe.com<br>You're submitting too quickly. Please wait a minute and try again.<br>Could not reach the server. Check your connection and try again.
coloriet.nl C · 2h ago ais-pre-psgakquiwaol5aevbdjv6g-759203062707.asia-east1.run.app B · 2h ago ai.studio B · 2h ago ais-dev-psgakquiwaol5aevbdjv6g-759203062707.asia-east1.run.app B · 3h ago aistudio.google.com B · 4h ago coloriet.nl C · 2h ago ais-pre-psgakquiwaol5aevbdjv6g-759203062707.asia-east1.run.app B · 2h ago ai.studio B · 2h ago ais-dev-psgakquiwaol5aevbdjv6g-759203062707.asia-east1.run.app B · 3h ago aistudio.google.com B · 4h ago
Product tour<br>See the audit in motion<br>17 seconds of what BeaverCheck does -- composite score, Lighthouse mobile + desktop, top priorities ranked by impact, and per-category drill-downs. No login. Free forever.
Recent audit<br>See a real audit, end to end<br>Here's an actual BeaverCheck report for stripe.com -- composite score, 8 categories, Lighthouse mobile + desktop, top priorities, business case. Click to explore.
No login. No payment. Every report URL stays live forever, shareable with your team.
Everything in one report<br>One audit, every surface that matters: Lighthouse mobile + desktop, prioritized fixes ranked by impact, and per-category drill-downs with row-level findings.
Lighthouse mobile + desktop<br>Both viewports run end-to-end. Performance, Accessibility, Best Practices, SEO scores plus all six Core Web Vitals (FCP, LCP, TBT, CLS, SI, TTI) per device.
Top priorities, ranked by impact<br>The 5 fixes that move the score the most -- with category context, severity, and a one-click 'Download for AI agent' export so Cursor/Claude/Copilot can actually fix them.
Per-category drill-down<br>Click into any of the 8 categories for the full check list, row-level findings, severity grades, and detailed fix guidance for each issue.
What we check<br>100+ checks across 8 scored categories, plus Lighthouse mobile and desktop<br>Every audit runs the same comprehensive checklist. Plus the full Lighthouse suite, mobile and desktop, with hundreds of individual audits.
Performance<br>15 checks<br>• Lighthouse Performance score (mobile + desktop)<br>• Core Web Vitals: LCP, INP, CLS<br>• CrUX real-user data (28-day P75)<br>• Render-blocking resource detection<br>• Third-party payload impact analysis<br>• Server response intelligence (Cache-Status, Vary, ETag)<br>• Resource hints & font loading audit
Security<br>25 checks<br>• SSL certificate chain & expiry monitoring<br>• Security headers analysis (CSP, HSTS, X-Frame)<br>• Content Security Policy deep analysis<br>• Bot challenge detection (Cloudflare, DataDome, Akamai, etc.)<br>• Login page hardening (CSRF, captcha, SSO, password reset)<br>• CORS depth,...