landmark found — Accessibility > Landmark Structure 4. **[CRITICAL]** No H1 heading found — Accessibility > Heading Hierarchy 5. **[WARNING]** Cross-Origin-Embedder-Policy header is missing — Security > Security Headers --- ## Lighthouse Scores | Category | Score | |----------|-------| | Performance | 99 | | Accessibility | 86 | | Best Practices | 96 | | SEO | 83 | --- ## Security ### Security Headers (F — 30/100) *3 of 10 headers properly configured* - **[PASS]** Strict-Transport-Security is properly configured - **[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 35 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) *No cookies set — no cookie security risks* - **[PASS]** No cookies set — no cookie security risks --- ## Advanced Security ### Subresource Integrity (A+ — 100/100) *No external resources* - **[PASS]** No external resources to protect ### 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 (A+ — 100/100) *47 KB transferred, 13 requests* - **[PASS]** Page weighs 90 KB (47 KB transferred) - **[PASS]** 13 HTTP requests - **[INFO]** Estimated 0.01 g CO2 per page load ### Third-Party Impact (D — 50/100) *100% third-party, 0 ms blocking* - **[WARNING]** Third-party code accounts for 100% of page weight (47.3 KiB of 47.4 KiB) - **[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) *5 images, 0 KB saveable* - **[WARNING]** https://archlinux.org/static/rss.svg is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://archlinux.org/static/click_and_pledge.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://archlinux.org/static/hetzner_logo.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://archlinux.org/static/icons8_logo.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. ### JS Execution Cost (A+ — 100/100) *334ms total JS execution* - **[INFO]** https://archlinux.org/: 183ms CPU time - **[INFO]** Unattributable: 151ms CPU time - **[WARNING]** Third-party scripts: 334ms (100% of total) ### Font Loading (A+ — 100/100) *No web fonts (system fonts)* - **[PASS]** No web fonts loaded — system fonts are fastest ### JS Bundles (A+ — 100/100) *1 scripts, 0 KB unused* ### 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) *No optimization needed* - **[PASS]** No resource hint issues ### 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 (F — 40/100) *92 links checked, 33 healthy, 59 broken* - **[CRITICAL]** 33 of 92 links are healthy - **[WARNING]** Broken link: https://www.archlinux.org/static/archlinux_common_style/a... — Found in . Get "https://www.archlinux.org/static/archlinux_common_style/apple-touch-icon-72x72.png": read tcp 141.227.188.123:41514->209.126.35.79:443: read: connection reset by peer - **[WARNING]** Broken link: https://www.archlinux.org/static/archlinux_common_style/a... — Found in . Get "https://www.archlinux.org/static/archlinux_common_style/apple-touch-icon-114x114.png": read tcp 141.227.188.123:41528->209.126.35.79:443: read: connection reset by peer - **[WARNING]** Broken link: https://www.archlinux.org/static/archlinux_common_style/a... — Found in . Get "https://www.archlinux.org/static/archlinux_common_style/apple-touch-icon-144x144.png": read tcp 141.227.188.123:41532->209.126.35.79:443: read: connection reset by peer - **[WARNING]** Broken link: https://www.archlinux.org/opensearch/packages/ — Found in . Get "https://www.archlinux.org/opensearch/packages/": read tcp 141.227.188.123:41538->209.126.35.79:443: read: connection reset by peer - **[WARNING]** Broken link: https://www.archlinux.org/feeds/news/ — Found in . Get "https://www.archlinux.org/feeds/news/": read tcp 141.227.188.123:41554->209.126.35.79:443: read: connection reset by peer - **[WARNING]** Broken link: https://www.archlinux.org/feeds/packages/ — Found in . Get "https://www.archlinux.org/feeds/packages/": read tcp 141.227.188.123:41512->209.126.35.79:443: read: connection reset by peer - **[WARNING]** Broken link: https://www.archlinux.org/static/homepage.js — Found in