# BeaverCheck Audit Report — https://kubernetes.io **Date:** April 4, 2026 **URL:** https://kubernetes.io **Overall Grade:** C (77/100) **Report:** https://beavercheck.com/results/6b370530-f1bb-4b86-b8a7-28ed882c4baf ## 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]** 3 button(s) with no accessible text — Accessibility > Link & Button Quality 4. **[CRITICAL]** 5 link(s) with no accessible text — Accessibility > Link & Button Quality 5. **[WARNING]** Cross-Origin-Embedder-Policy header is missing — Security > Security Headers --- ## Lighthouse Scores | Category | Score | |----------|-------| | Performance | 56 | | Accessibility | 82 | | Best Practices | 100 | | SEO | 92 | --- ## Security ### Security Headers (F — 25/100) *2 of 10 headers properly configured* - **[WARNING]** HSTS is missing includeSubDomains — Without includeSubDomains, subdomains can still be accessed over HTTP. - **[WARNING]** X-Content-Type-Options header is missing — This header prevents MIME-type sniffing, which can lead to XSS attacks. Set it to 'nosniff'. - **[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 39 days) - **[PASS]** Certificate chain has 2 certificates - **[PASS]** Certificate uses modern signature algorithm - **[PASS]** Certificate covers 2 domain(s) - **[PASS]** Certificate is issued by a trusted CA ### Cookie Security (A+ — 100/100) *No cookies set — no cookie security risks* - **[PASS]** No cookies set — no cookie security risks --- ## Advanced Security ### Subresource Integrity (C — 60/100) *1 of 2 external resources have SRI* - **[PASS]** script from code.jquery.com has SRI protection - **[WARNING]** External script from www.googletagmanager.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 (F — 30/100) *No DMARC* - **[WARNING]** No DMARC record found — Without DMARC, email receivers have no policy for handling authentication failures. ### 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 (C — 56/100) *2.0 MB transferred, 37 requests* - **[INFO]** Page weighs 3.6 MB (2.0 MB transferred) - **[WARNING]** Images are 1.2 MB — compress or use modern formats — Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size. - **[INFO]** Fonts are 313 KB — consider subsetting or using system fonts — Subset fonts to include only used characters, or switch to system font stacks. - **[PASS]** 37 HTTP requests - **[INFO]** Estimated 0.42 g CO2 per page load ### Third-Party Impact (A+ — 100/100) *18% third-party, 0 ms blocking* - **[INFO]** Third-party code accounts for 18% of page weight (361.6 KiB of 2.0 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 (C — 60/100) *11 images, 0 KB saveable* - **[WARNING]** https://kubernetes.io/_common-resources/images/flo... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://kubernetes.io/case-studies/babylon/babylon... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://kubernetes.io/case-studies/booking-com/boo... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://kubernetes.io/images/cncf-logo-white.svg is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://kubernetes.io/_common-resources/images/sca... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://kubernetes.io/_common-resources/images/blo... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://kubernetes.io/_common-resources/images/sui... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://kubernetes.io/case-studies/booz-allen/booz... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://kubernetes.io/case-studies/appdirect/appdi... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. ### JS Execution Cost (D — 40/100) *2163ms total JS execution* - **[WARNING]** Unattributable: 614ms CPU time - **[WARNING]** https://code.jquery.com/jquery-3.6.0.min.js: 562ms CPU time - **[WARNING]** https://kubernetes.io/: 445ms CPU time - **[WARNING]** https://www.googletagmanager.com/gtag/js?id=G-JPP6...: 375ms CPU time - **[INFO]** https://kubernetes.io/scss/main.min.8ed3ebfd8c53cb...: 88ms CPU time - **[WARNING]** Third-party scripts: 1630ms (75% of total) ### Font Loading (A+ — 100/100) *3 fonts (313 KB)* - **[INFO]** 3 font(s) use font-display: swap (FOUT risk but functional) ### JS Bundles (B — 80/100) *9 scripts, 134 KB unused* - **[WARNING]** https://www.googletagmanager.com/gtag/js?id=G-JPP6...: 67 KB unused (39%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://www.google.com/cse/static/element/b33cba58...: 67 KB unused (68%) — Consider code splitting or tree shaking to reduce unused code. - **[INFO]** Total unused JavaScript: 134 KB ### 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) *1 hints, 0 missing preconnects* - **[PASS]** Page uses 1 resource hint(s) --- ## Content Quality ### Links (A+ — 100/100) *96 links checked, 96 healthy, 0 broken* - **[PASS]** 96 of 96 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 (A+ — 100/100) *Open Graph tags are well configured for social sharing.* - **[INFO]** og:description is long (560 characters) — Descriptions over 200 characters may be truncated in social sharing previews. ### Structured Data (A — 90/100) *1 JSON-LD block(s) found — structured data is well configured.* - **[WARNING]** Missing required property "name" for Organization — The "name" property is required for the Organization schema type. - **[INFO]** Missing recommended property "sameAs" for Organization — Adding "sameAs" can improve how search engines display your content. --- ## Infrastructure ### DNS Records (A — 90/100) *2 A records, 1706 ms lookup* - **[PASS]** Resolves to 2 IPv4 address(es) - **[INFO]** No IPv6 (AAAA) records - **[PASS]** 4 nameserver(s) configured - **[PASS]** 5 mail exchanger(s) configured - **[INFO]** CAA records not checked — CAA record lookup requires a specialized DNS resolver. This check will be available in a future update. - **[PASS]** SPF record present in TXT - **[WARNING]** DNS resolution is slow (1706 ms) — Slow DNS adds latency to every page load. Consider a faster DNS provider. ### Redirect Chain (A+ — 100/100) *No redirects — direct access* - **[PASS]** No redirects — direct access ### IPv6 Readiness (C — 60/100) *No IPv6 support* - **[INFO]** No IPv6 (AAAA) records found — IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity. ### Crawlability (A+ — 100/100) *robots.txt present, sitemap with 16 URLs* - **[PASS]** robots.txt is present - **[PASS]** sitemap.xml is present - **[PASS]** sitemap.xml is valid XML - **[PASS]** sitemap.xml contains 16 entries - **[PASS]** Sitemap index with 16 child sitemaps - **[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) *kubernetes.io — via 1API GmbH, 11 years, 10 months old, hosted on AWS* - **[PASS]** Domain registered until Jul 23, 2026 (3 months remaining) - **[PASS]** Registrar: 1API GmbH - **[PASS]** Hosting: AWS --- ## 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 - **[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 --- ## 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 (A+ — 100/100) *© 2026 The Kubernetes Authors | Documentation Distributed* - **[PASS]** Copyright notice is up to date — Copyright notice is up to date: © 2026 The Kubernetes Authors | Documentation Distributed - **[PASS]** Copyright holder: The Kubernetes Authors | Documentation Distributed ### 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 *1 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]** 1 third-party services across 1 categories — 1 third-party services detected across 1 categories: Analytics (1). Each of these services receives some user data from your site visitors. - **[INFO]** Google Analytics (Analytics) — Detected via script URL. Typically collects: Page views, User behavior, Demographics, Device info, IP address. Privacy policy: https://policies.google.com/privacy. 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) *Netlify* - **[PASS]** Site is served via Netlify CDN ### HTTP Caching (B — 75/100) *public,max-age=0,must-revalidate* - **[PASS]** Cache-Control header is set - **[PASS]** ETag present — enables conditional (304) responses --- ## Accessibility ### Landmark Structure (A — 85/100) *4 landmarks* - **[PASS]**
landmark present - **[PASS]** 1