# BeaverCheck Audit Report — https://claude.com **Date:** April 21, 2026 **URL:** https://claude.com **Overall Grade:** C (73/100) **Report:** https://beavercheck.com/results/8fa691a5-6df8-4656-8917-66915d78775c ## Top Findings 1. **[CRITICAL]** Content-Security-Policy header is missing — Security > Security Headers 2. **[CRITICAL]** No Content-Security-Policy header found — Security > Content Security Policy 3. **[CRITICAL]** Page weighs 13.6 MB (4.2 MB transferred) — Performance > Page Weight Budget 4. **[CRITICAL]** No
landmark found — Accessibility > Landmark Structure 5. **[WARNING]** 73 third-party resources (90% of weight) — Performance > Page Weight Inventory --- ## Lighthouse Scores | Category | Score | |----------|-------| | Performance | 32 | | Accessibility | 96 | | Best Practices | 92 | | SEO | 100 | --- ## Security ### Security Headers (D — 40/100) *4 of 10 headers properly configured* - **[PASS]** Strict-Transport-Security is properly configured - **[PASS]** X-Content-Type-Options is properly configured - **[WARNING]** X-Frame-Options header is missing — This header prevents clickjacking by controlling who can embed your page in a frame. Set it to DENY or SAMEORIGIN. - **[WARNING]** Referrer-Policy header is missing — Controls how much referrer information is sent with requests. Set to 'strict-origin-when-cross-origin' or stricter. - **[WARNING]** Permissions-Policy header is missing — Controls which browser features (camera, microphone, geolocation) are allowed. Set it to restrict unused features. - **[CRITICAL]** Content-Security-Policy header is missing — CSP is the most important header for preventing XSS attacks. See the CSP section for detailed analysis. - **[WARNING]** Cross-Origin-Opener-Policy header is missing — COOP isolates your browsing context, preventing cross-origin side-channel attacks. Set to 'same-origin'. - **[WARNING]** Cross-Origin-Embedder-Policy header is missing — COEP prevents loading cross-origin resources without explicit permission. Required for SharedArrayBuffer and high-resolution timers. - **[PASS]** X-Powered-By header is not present - **[PASS]** Server header is present without version info ### Content Security Policy (F — 0/100) *No enforcing CSP policy found* - **[CRITICAL]** No Content-Security-Policy header found — CSP is the most effective defense against XSS attacks. Add a Content-Security-Policy header to restrict resource loading. ### TLS & Certificates (A+ — 100/100) *TLS 1.3, 7 checks passed* - **[PASS]** TLS 1.3 is used - **[PASS]** Strong cipher suite is used - **[INFO]** HTTP/2 is not negotiated — HTTP/2 provides multiplexing and header compression for better performance. - **[PASS]** Certificate is valid (expires in 56 days) - **[PASS]** Certificate chain has 2 certificates - **[PASS]** Certificate uses modern signature algorithm - **[PASS]** Certificate covers 1 domain(s) - **[PASS]** Certificate is issued by a trusted CA ### Cookie Security (A+ — 100/100) *3 cookies analyzed, 9 checks passed* - **[PASS]** Cookie 'claude_visited' has the Secure flag - **[PASS]** Cookie 'claude_visited' has the HttpOnly flag - **[PASS]** Cookie 'claude_visited' has SameSite=Lax - **[PASS]** Cookie '__cf_bm' has the Secure flag - **[PASS]** Cookie '__cf_bm' has the HttpOnly flag - **[PASS]** Cookie '__cf_bm' has SameSite=None - **[PASS]** Cookie '_cfuvid' has the Secure flag - **[PASS]** Cookie '_cfuvid' has the HttpOnly flag - **[PASS]** Cookie '_cfuvid' has SameSite=None --- ## Advanced Security ### Subresource Integrity (D — 40/100) *1 of 12 external resources have SRI* - **[WARNING]** External script from a-cdn.anthropic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from widget.intercom.io lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from assets-proxy.anthropic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External link from assets-proxy.anthropic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External link from assets-proxy.anthropic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External link from assets-proxy.anthropic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External link from assets-proxy.anthropic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External link from accounts.google.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from accounts.google.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from s-cdn.anthropic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[PASS]** script from a-cdn.claude.ai has SRI protection - **[WARNING]** External script from s-cdn.anthropic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. ### JS Library Vulnerabilities (A+ — 100/100) *No known vulnerabilities* - **[PASS]** No known JavaScript library vulnerabilities detected ### Information Leakage (A+ — 100/100) *No exposures* - **[INFO]** No security.txt found — Consider adding a security.txt at /.well-known/security.txt. - **[PASS]** No sensitive files exposed ### Email Security (A+ — 100/100) *DMARC: reject* - **[PASS]** DMARC policy is reject — strongest protection ### Permissions-Policy (D — 40/100) *No header set* - **[WARNING]** No Permissions-Policy header — Consider adding a Permissions-Policy header to restrict browser feature access from embedded content. ### CORS Configuration (B — 80/100) *No CORS headers* - **[PASS]** No CORS headers present — secure default --- ## Performance ### Page Weight Budget (F — 0/100) *4.2 MB transferred, 81 requests* - **[CRITICAL]** Page weighs 13.6 MB (4.2 MB transferred) - **[WARNING]** JavaScript is 3.4 MB — consider code splitting or lazy loading — Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts. - **[INFO]** Fonts are 277 KB — consider subsetting or using system fonts — Subset fonts to include only used characters, or switch to system font stacks. - **[INFO]** 81 HTTP requests - **[INFO]** Estimated 0.87 g CO2 per page load ### Third-Party Impact (D — 50/100) *90% third-party, 0 ms blocking* - **[WARNING]** Third-party code accounts for 90% of page weight (3.8 MiB of 4.2 MiB) - **[PASS]** Third-party blocking time is low (0 ms) ### Text Compression (A+ — 100/100) *All text resources are compressed* - **[PASS]** All text resources are compressed ### Image Optimization (B — 75/100) *8 images, 0 KB saveable* - **[PASS]** All images are well-optimized ### JS Execution Cost (F — 20/100) *6086ms total JS execution* - **[WARNING]** https://assets-proxy.anthropic.com/claude-ai/v2/as...: 1659ms CPU time - **[WARNING]** Unattributable: 1623ms CPU time - **[WARNING]** https://assets-proxy.anthropic.com/claude-ai/v2/as...: 877ms CPU time - **[WARNING]** https://claude.com/: 541ms CPU time - **[WARNING]** https://js.intercomcdn.com/vendor-modern.80eace52....: 465ms CPU time - **[WARNING]** Third-party scripts: 5341ms (88% of total) ### Font Loading (A+ — 100/100) *2 fonts (277 KB)* - **[INFO]** 2 font(s) use font-display: swap (FOUT risk but functional) ### JS Bundles (F — 20/100) *41 scripts, 2.4 MB unused* - **[WARNING]** https://assets-proxy.anthropic.com/claude-ai/v2/as...: 1.8 MB unused (84%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://assets-proxy.anthropic.com/claude-ai/v2/as...: 221 KB unused (39%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://js.intercomcdn.com/frame-modern.db2b74ec.j...: 138 KB unused (71%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://js.intercomcdn.com/vendor-modern.80eace52....: 91 KB unused (64%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://accounts.google.com/gsi/client: 72 KB unused (75%) — Consider code splitting or tree shaking to reduce unused code. - **[INFO]** Total unused JavaScript: 2.4 MB ### Resource Caching (A+ — 100/100) *All resources properly cached* - **[PASS]** No caching issues found ### Critical Rendering Path (A+ — 100/100) *No render-blocking resources* - **[PASS]** No render-blocking resources detected ### Resource Hints (A+ — 100/100) *6 hints, 0 missing preconnects* - **[PASS]** Page uses 6 resource hint(s) ### Page Weight Inventory (F — 15/100) *81 resources · 4.2 MB · 2.4 MB savings available* - **[WARNING]** Page weight 3.2 MB over 1MB target - **[INFO]** ~2.4 MB of savings available - **[WARNING]** 73 third-party resources (90% of weight) - **[INFO]** 3 resources over 200KB ### Render-Blocking Resources (A+ — 100/100) *No render-blocking resources detected* - **[PASS]** No render-blocking resources detected in ### Third-Party Resources (A+ — 100/100) *No third-party resources detected* --- ## Content Quality ### Links (A+ — 100/100) *56 links checked, 56 healthy, 0 broken* - **[PASS]** 56 of 56 links are healthy ### Mixed Content (A+ — 100/100) *No mixed content detected — all resources use HTTPS.* - **[PASS]** No mixed content detected — all resources use HTTPS ### Open Graph (D — 65/100) *Open Graph tags need attention — social sharing previews may be incomplete.* - **[WARNING]** Missing og:title — The og:title tag controls the title shown in social sharing previews. - **[WARNING]** Missing og:description — The og:description tag controls the description in social sharing previews. - **[INFO]** Missing og:url — The og:url tag specifies the canonical URL for the shared content. ### Structured Data (B — 80/100) *1 JSON-LD block(s) found — some improvements recommended.* - **[WARNING]** Missing required property "name" for WebSite — The "name" property is required for the WebSite schema type. - **[WARNING]** Missing required property "url" for WebSite — The "url" property is required for the WebSite schema type. - **[INFO]** Missing recommended property "description" for WebSite — Adding "description" can improve how search engines display your content. - **[INFO]** Missing recommended property "potentialAction" for WebSite — Adding "potentialAction" can improve how search engines display your content. --- ## Infrastructure ### DNS Records (A — 90/100) *1 A records, 30 ms lookup* - **[PASS]** Resolves to 1 IPv4 address(es) - **[INFO]** Single A record — no DNS redundancy — Multiple A records provide failover if one server goes down. - **[PASS]** Has 1 IPv6 (AAAA) record(s) - **[PASS]** 2 nameserver(s) configured - **[INFO]** No MX records — email not configured via DNS - **[INFO]** CAA records not checked — CAA record lookup requires a specialized DNS resolver. This check will be available in a future update. - **[INFO]** No SPF record found in TXT records — SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'. - **[PASS]** DNS resolution time: 30 ms ### Redirect Chain (A+ — 100/100) *No redirects — direct access* - **[PASS]** No redirects — direct access ### IPv6 Readiness (A+ — 100/100) *IPv6 reachable (1 ms)* - **[PASS]** IPv6 is configured and reachable at 2607:6bc0::10 ### Crawlability (A+ — 100/100) *robots.txt present, sitemap with 2388 URLs* - **[PASS]** robots.txt is present - **[PASS]** sitemap.xml is present - **[PASS]** sitemap.xml is valid XML - **[PASS]** sitemap.xml contains 2388 entries - **[PASS]** robots.txt references sitemap ### URL Variants (A+ — 100/100) *www/non-www, trailing slash, HTTP→HTTPS* - **[PASS]** www/non-www redirect configured correctly (preferred: non-www) - **[PASS]** HTTP correctly 301-redirects to HTTPS ### Domain Intelligence (A+ — 100/100) *claude.com — via MarkMonitor Inc., 31 years, 4 months old* - **[PASS]** Domain registered until May 23, 2028 (2 years, 1 months remaining) - **[INFO]** DNSSEC is not enabled — DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it. - **[PASS]** Registrar: MarkMonitor Inc. - **[WARNING]** Registrar lock is NOT enabled — The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers. --- ## Compliance ### WCAG Compliance (A+ — 100/100) *No testable criteria* ### Cookie Consent & Privacy (B — 80/100) *No consent signals detected* - **[WARNING]** No privacy policy link detected — A privacy policy page is recommended for transparency and may be legally required. - **[INFO]** No terms of service link detected - **[INFO]** No cookie consent banner detected - **[PASS]** 3 cookie(s) set on initial load (functional) - **[INFO]** This is an automated check, not legal advice — BeaverCheck detects technical indicators of consent management. This does not constitute a legal compliance assessment. Consult a privacy professional for GDPR/CCPA compliance. ### Language & i18n (A — 90/100) *Lang attribute present* - **[PASS]** attribute is present - **[PASS]** value is valid - **[INFO]** No Content-Language HTTP header - **[INFO]** Language signals are inconsistent — The attribute and Content-Language header should agree. ### Readability & Typography (A+ — 100/100) *Font sizes and tap targets checked* ### Viewport Configuration (A+ — 100/100) *Viewport properly configured* - **[PASS]** Viewport meta tag is present - **[PASS]** width=device-width is set - **[PASS]** User zooming is allowed ### Third-Party Trackers (C — 55/100) *4 trackers detected* - **[INFO]** 4 third-party trackers detected — Found 3 analytics, 0 advertising, 0 marketing, 0 tag manager trackers. - **[WARNING]** Trackers detected but no cookie policy found — This page loads 4 trackers but no cookie policy was detected. GDPR requires disclosure when using tracking cookies. - **[WARNING]** Trackers detected but no privacy policy found — Most data protection regulations require a privacy policy when collecting user data via trackers. ### Cookie & Tracker Inventory (A+ — 100/100) *3 cookies · 4 trackers · 0 pre-consent* - **[INFO]** 1 cookie(s) could not be classified - **[INFO]** 4 third-party tracker(s) detected on page --- ## Legal ### Legal Page Ecosystem (F — 0/100) *0 of 7 expected legal pages detected* - **[WARNING]** Privacy Policy not detected — No link matching common Privacy Policy URL patterns or link text was found. Most websites are expected to have a Privacy Policy, especially those collecting user data. - **[WARNING]** Terms of Service not detected — No link matching common Terms of Service URL patterns or link text was found. Most websites are expected to have a Terms of Service, especially those collecting user data. - **[INFO]** Cookie Policy not detected — No link matching common Cookie Policy URL patterns or link text was found. Most websites are expected to have a Cookie Policy, especially those collecting user data. - **[INFO]** Accessibility Statement not detected — No link matching common Accessibility Statement URL patterns or link text was found. Most websites are expected to have a Accessibility Statement, especially those collecting user data. - **[INFO]** DMCA / Copyright Notice not detected — No link matching common DMCA / Copyright Notice URL patterns or link text was found. Most websites are expected to have a DMCA / Copyright Notice, especially those collecting user data. - **[INFO]** Refund / Returns Policy not detected — No link matching common Refund / Returns Policy URL patterns or link text was found. Most websites are expected to have a Refund / Returns Policy, especially those collecting user data. - **[INFO]** Acceptable Use Policy not detected — No link matching common Acceptable Use Policy URL patterns or link text was found. Most websites are expected to have a Acceptable Use Policy, especially those collecting user data. ### Copyright Notice (C — 55/100) *No copyright notice detected* - **[INFO]** No copyright notice detected — No copyright notice detected in the page content. While not legally required in most jurisdictions (copyright exists automatically), a notice is standard practice and signals site ownership. ### Regulatory Indicators *0 regulatory indicator(s) detected* - **[INFO]** This is a technical scan, not a legal assessment — BeaverCheck detects technical indicators that may suggest regulatory relevance. This is not a compliance audit and should not be relied upon for legal decisions. Consult qualified legal counsel for compliance assessments. - **[INFO]** No specific regulatory indicators detected — No strong signals for GDPR, CCPA, ADA, PCI, HIPAA, or COPPA were found. This does not mean these regulations don't apply — it means we didn't detect common technical indicators. ### Third-Party Data Sharing *2 third-party service(s) detected* - **[INFO]** Data inventory for transparency purposes — This inventory identifies third-party services that receive data from your site visitors. Under regulations like GDPR (Article 30), maintaining records of data processing activities is commonly considered a best practice. This automated scan provides a starting point — it may not capture all data flows. - **[INFO]** 2 third-party services across 2 categories — 2 third-party services detected across 2 categories: Customer Support (1), CDN (1). Each of these services receives some user data from your site visitors. - **[INFO]** Intercom (Customer Support) — Detected via script URL. Typically collects: User identity, Chat transcripts, Page views. Privacy policy: https://www.intercom.com/legal/privacy. Data Processing Agreement available. - **[INFO]** Cloudflare (CDN) — Detected via cookie name. Typically collects: IP address (transient), Request metadata. Privacy policy: https://www.cloudflare.com/privacypolicy/. Data Processing Agreement available. ### Compliance Badges (C — 55/100) *0 compliance badge(s) detected* - **[INFO]** No compliance badges detected — No recognized compliance certification badges or seals were found. This is common — many sites do not display compliance badges. --- ## Availability ### CDN & Delivery (B — 80/100) *Cloudflare* - **[PASS]** Site is served via Cloudflare CDN (edge: MAD) ### HTTP Caching (D — 40/100) *no-store (uncacheable)* - **[INFO]** Cache-Control: no-store prevents all caching — Intentional for dynamic content, but increases server load for every page view. - **[INFO]** No ETag or Last-Modified header — Conditional requests (304 Not Modified) are not possible without validators. ### Transport Security (A+ — 100/100) *HTTP/3, HSTS, and TLS version analysis* - **[PASS]** HTTP/3 (QUIC) supported — The server advertises HTTP/3 via Alt-Svc for faster connections on mobile networks. - **[PASS]** HSTS enabled (includeSubDomains, preload) - **[PASS]** HSTS preload enabled - **[PASS]** TLS 1.3 in use (fastest handshake, 1-RTT) --- ## Accessibility ### Landmark Structure (D — 40/100) *1 landmarks* - **[CRITICAL]** No
landmark found — Screen reader users cannot quickly navigate to the primary content. Wrap your main content in
. - **[WARNING]** No