# BeaverCheck Audit Report — https://matheo-olsen.fr **Date:** April 8, 2026 **URL:** https://matheo-olsen.fr **Overall Grade:** B (86/100) **Report:** https://beavercheck.com/results/4e3abdb8-6700-44cb-9f5d-1fb500265342 ## Top Findings 1. **[CRITICAL]** No favicon or icon links detected — Accessibility > Favicon & Branding 2. **[WARNING]** Cross-Origin-Embedder-Policy header is missing — Security > Security Headers 3. **[WARNING]** Cross-Origin-Opener-Policy header is missing — Security > Security Headers 4. **[WARNING]** Unattributable: 481ms CPU time — Performance > JS Execution Cost 5. **[WARNING]** https://matheo-olsen.fr/: 864ms CPU time — Performance > JS Execution Cost --- ## Lighthouse Scores | Category | Score | |----------|-------| | Performance | 80 | | Accessibility | 97 | | Best Practices | 96 | | SEO | 100 | --- ## Security ### Security Headers (A — 85/100) *8 of 10 headers properly configured* - **[PASS]** Strict-Transport-Security is properly configured - **[PASS]** X-Content-Type-Options is properly configured - **[PASS]** X-Frame-Options is properly configured - **[PASS]** Referrer-Policy is properly configured - **[PASS]** Permissions-Policy is set - **[PASS]** Content-Security-Policy is present - **[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 not present ### Content Security Policy (A+ — 100/100) *9 of 10 CSP checks passed* - **[INFO]** Raw CSP policy - **[PASS]** default-src directive is set - **[PASS]** No 'unsafe-inline' in script source - **[PASS]** No 'unsafe-eval' in script source - **[PASS]** No wildcard in script source - **[PASS]** object-src is set to 'none' - **[PASS]** base-uri is properly restricted - **[PASS]** frame-ancestors directive is set - **[PASS]** form-action directive is set - **[PASS]** upgrade-insecure-requests is enabled ### 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 84 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 (A — 85/100) *DMARC: quarantine* - **[PASS]** DMARC policy is quarantine — good protection ### Permissions-Policy (B — 75/100) *3 directives, 2 missing* - **[PASS]** camera=() — blocked for all origins - **[PASS]** microphone=() — blocked for all origins - **[PASS]** geolocation=() — blocked for all origins - **[INFO]** payment not restricted — Consider adding payment=() to block payment access from embedded content. - **[INFO]** usb not restricted — Consider adding usb=() to block usb access from embedded content. ### CORS Configuration (B — 80/100) *No CORS headers* - **[PASS]** No CORS headers present — secure default --- ## Performance ### Page Weight Budget (A+ — 96/100) *652 KB transferred, 37 requests* - **[PASS]** Page weighs 1.5 MB (652 KB transferred) - **[PASS]** 37 HTTP requests - **[INFO]** Estimated 0.13 g CO2 per page load ### Third-Party Impact (A+ — 100/100) *0% third-party, 0 ms blocking* - **[INFO]** Third-party code accounts for 0% of page weight (2.5 KiB of 652.1 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 (A+ — 100/100) *5 images, 0 KB saveable* - **[PASS]** All images are well-optimized ### JS Execution Cost (D — 40/100) *2628ms total JS execution* - **[WARNING]** https://matheo-olsen.fr/_next/static/chunks/8f02d1...: 1016ms CPU time - **[WARNING]** https://matheo-olsen.fr/: 864ms CPU time - **[WARNING]** Unattributable: 481ms CPU time - **[INFO]** https://matheo-olsen.fr/_next/static/chunks/5cf263...: 186ms CPU time - **[INFO]** https://matheo-olsen.fr/_next/static/chunks/fcb71b...: 80ms CPU time - **[INFO]** Third-party scripts: 481ms (18% of total) ### Font Loading (A+ — 100/100) *6 fonts (190 KB)* - **[INFO]** 6 font(s) use font-display: swap (FOUT risk but functional) ### JS Bundles (A+ — 100/100) *14 scripts, 46 KB unused* - **[WARNING]** https://matheo-olsen.fr/_next/static/chunks/8f02d1...: 24 KB unused (35%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://matheo-olsen.fr/_next/static/chunks/5cf263...: 22 KB unused (43%) — Consider code splitting or tree shaking to reduce unused code. - **[INFO]** Total unused JavaScript: 46 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) *8 hints, 0 missing preconnects* - **[PASS]** Page uses 8 resource hint(s) ### 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 — 95/100) *61 links checked, 60 healthy, 1 broken* - **[WARNING]** 60 of 61 links are healthy - **[CRITICAL]** Broken link: https://fr.linkedin.com/in/math%C3%A9o-olsen-aa2903292 — Found in . Returns HTTP 999. ### 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.* ### Structured Data (B — 80/100) *5 JSON-LD block(s) found — some improvements recommended.* - **[WARNING]** Missing required property "name" for LocalBusiness — The "name" property is required for the LocalBusiness schema type. - **[WARNING]** Missing required property "address" for LocalBusiness — The "address" property is required for the LocalBusiness schema type. - **[INFO]** Missing recommended property "telephone" for LocalBusiness — Adding "telephone" can improve how search engines display your content. - **[INFO]** Missing recommended property "openingHours" for LocalBusiness — Adding "openingHours" can improve how search engines display your content. - **[PASS]** Custom type "WebPage" — unable to validate specific properties - **[PASS]** 2 blocks of custom type "ItemList" — unable to validate specific properties - **[PASS]** 5 JSON-LD blocks found --- ## Infrastructure ### DNS Records (B — 80/100) *1 A records, 934 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. - **[INFO]** No IPv6 (AAAA) records - **[PASS]** 4 nameserver(s) configured - **[PASS]** 1 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. - **[INFO]** No SPF record found in TXT records — SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'. - **[WARNING]** DNS resolution is slow (934 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 25 URLs* - **[PASS]** robots.txt is present - **[PASS]** sitemap.xml is present - **[PASS]** sitemap.xml is valid XML - **[PASS]** sitemap.xml contains 25 entries - **[PASS]** robots.txt references sitemap ### URL Variants (A — 90/100) *www/non-www, trailing slash, HTTP→HTTPS* - **[PASS]** www/non-www redirect configured correctly (preferred: non-www) - **[WARNING]** HTTP→HTTPS redirect uses 302 instead of 301 ### Domain Intelligence (A+ — 100/100) *matheo-olsen.fr — via SAS Ligne Web Services - LWS, 3 years, 5 months old, hosted on OVH* - **[PASS]** Domain registered until Nov 14, 2026 (7 months remaining) - **[PASS]** Registrar: SAS Ligne Web Services - LWS - **[PASS]** Hosting: OVH --- ## 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 ### Third-Party Trackers (C — 55/100) *1 trackers detected* - **[INFO]** 1 third-party trackers detected — Found 1 analytics, 0 advertising, 0 marketing, 0 tag manager trackers. - **[WARNING]** Trackers detected but no cookie policy found — This page loads 1 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. --- ## Legal ### Legal Page Ecosystem (F — 35/100) *1 of 7 expected legal pages detected* - **[PASS]** Privacy Policy detected — Found at /confidentialite, linked from footer. - **[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 Mathéo Olsen* - **[PASS]** Copyright notice is up to date — Copyright notice is up to date: © 2026 Mathéo Olsen - **[PASS]** Copyright holder: Mathéo Olsen ### Regulatory Indicators *1 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]** GDPR indicators detected (moderate confidence) — Indicators suggesting GDPR may be relevant: European TLD detected: .fr. EU General Data Protection Regulation — governs collection and processing of personal data of EU residents. ### Third-Party Data Sharing *0 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]** No recognized third-party data-sharing services detected — This page does not appear to load external tracking, analytics, or advertising scripts. ### 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 (D — 50/100) *No CDN detected* - **[WARNING]** No CDN detected — A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them. ### 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 (A — 85/100) *20 landmarks* - **[PASS]**
landmark present - **[PASS]** 4