Free · No login · full audit in ~90 seconds
See what's wrong. Fix what matters. #
Two full Lighthouse runs, mobile and desktop, plus 100+ checks scored across performance, security, accessibility, SEO, infrastructure, compliance, content and sustainability.
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.
[github.com](/sites/github.com)
[vercel.com](/sites/vercel.com)
[stripe.com](/sites/stripe.com)
[It-wars.com B · 11m ago](/results/f1eca0ee-aba2-4d46-9d9b-4f0d42290d6a)
[linux.com C · 16m ago](/results/1ee56038-57c2-4bc0-860f-4254a6252068)
[coloriet.nl C · 2h ago](/results/2113497e-5841-4c39-813d-b74a31416afb)
[ais-pre-psgakquiwaol5aevbdjv6g-759203062707.asia-east1.run.app B · 3h ago](/results/90e39af9-25d6-4c5a-a831-da1e35e88aab)
[ai.studio B · 3h ago](/results/84c5ba95-0390-43c3-955d-9d0e905981d7)
[It-wars.com B · 11m ago](/results/f1eca0ee-aba2-4d46-9d9b-4f0d42290d6a)
[linux.com C · 16m ago](/results/1ee56038-57c2-4bc0-860f-4254a6252068)
[coloriet.nl C · 2h ago](/results/2113497e-5841-4c39-813d-b74a31416afb)
[ais-pre-psgakquiwaol5aevbdjv6g-759203062707.asia-east1.run.app B · 3h ago](/results/90e39af9-25d6-4c5a-a831-da1e35e88aab)
[ai.studio B · 3h ago](/results/84c5ba95-0390-43c3-955d-9d0e905981d7)
Product tour
See the audit in motion #
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.
Everything in one report #
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
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
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
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
100+ checks across 8 scored categories, plus Lighthouse mobile and desktop #
Every audit runs the same comprehensive checklist. Plus the full Lighthouse suite, mobile and desktop, with hundreds of individual audits.
Performance
15 checks- • Lighthouse Performance score (mobile + desktop)
- • Core Web Vitals: LCP, INP, CLS
- • CrUX real-user data (28-day P75)
- • Render-blocking resource detection
- • Third-party payload impact analysis
- • Server response intelligence (Cache-Status, Vary, ETag)
- • Resource hints & font audit
Security
25 checks- • SSL certificate chain & expiry monitoring
- • Security headers analysis (CSP, HSTS, X-Frame)
- • Content Security Policy deep analysis
- • Bot challenge detection (Cloudflare, DataDome, Akamai, etc.)
- • Login page hardening (CSRF, captcha, SSO, password reset)
- • CORS depth, Permissions-Policy, Referrer-Policy strictness
- • Subresource Integrity adoption on third-party scripts
- • Soft-404, empty-page, geo-restriction, maintenance-mode detection
- • Vulnerable JavaScript libraries (CVE matching)
- • Cookie security flags
Accessibility
14 checks- • Lighthouse Accessibility score
- • Screenshot contrast analysis (text over images)
- • Heading hierarchy validation
- • Heading text quality (placeholder, length, all-caps)
- • ARIA landmarks detection
- • Color contrast (CSS + pixel-sampled)
- • Image alt text audit
SEO
13 checks- • Meta tags (title, description, canonical)
- • Title style depth (separators, year-staleness, keyword stuffing)
- • Structured data + rich result validation
- • Open Graph & Twitter Card tags
- • Hreflang validation
- • Redirect chain analysis
- • Sitemap & robots.txt
- • Markup quality + hreflang completeness
Infrastructure
10 checks- • DNS resolution speed & IPv6
- • Email security (SPF, DKIM, DMARC, BIMI)
- • RDAP/WHOIS domain registration
- • Domain expiry monitoring
- • ASN & hosting provider identification
- • Green hosting verification
- • URL redirect variant checks
Compliance
16 checks- • Third-party tracker detection & categorization
- • GDPR Art. 13 disclosure presence
- • Internationalization extras (RTL, language switcher, mixed-lang)
- • Browser fingerprinting tool detection
- • Cookie policy presence
- • Privacy policy presence
- • Advertising tracker consent requirements
Content
9 checks- • Readability scoring (Flesch-Kincaid, Gunning Fog)
- • Image optimization audit (oversized, format, lazy)
- • Link analysis (internal, external, broken)
- • Open Graph / Twitter Card depth (image dimensions, type matching)
- • Mixed content (HTTP resources on HTTPS pages)
- • Word count & content quality
Sustainability
6 checks- • Page weight carbon estimation
- • Green hosting verification
- • Transfer size optimization
Lighthouse
8 checks- • Performance, Accessibility, Best Practices, SEO scores
- • Core Web Vitals metrics
- • Mobile + desktop dual audit
- • Diagnostic opportunities
Free tools
Targeted checks. No URL ceremony. #
Contrast CheckerWCAG 2.2 AA/AAA compliance for any color pair.
HTTP HeadersSecurity, caching, and policy header audit. SSL/TLS InspectorCertificate chain, cipher suites, and protocol support.
[DNS LookupA/AAAA/MX/NS/TXT records with propagation status.](/tools/dns)
[Redirect TracerFollow the redirect chain hop by hop.](/tools/redirects)
[INP CheckerCore Web Vitals from real Chrome user data.](/tools/inp)
My Recent Scans #
How It Works #
Three steps. Zero friction. Real results.
Enter a URL
Paste any website URL and pick a server location.
We Run 100+ Checks
Lighthouse, security headers, technology detection, content analysis, accessibility — all in one scan.
Get Your Full Report
8 scored categories plus Lighthouse mobile and desktop, an A–F composite grade, top findings, and PDF export. Everything in one page.
Step 3 in action -- your full audit report
Recent Audits #
Latest performance checks from the community.
Ready when you are. #
Free, permanent, shareable by URL. No account, no payment.