# BeaverCheck Audit Report — https://www.sorbonne-universite.fr

**Date:** April 7, 2026  
**URL:** https://www.sorbonne-universite.fr  
**Overall Grade:** C (71/100)  
**Report:** https://beavercheck.com/results/81347fda-cd58-520d-0055-a8fe63f17fcc

## 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]** 2 image-only link(s) without alt text — Accessibility > Link & Button Quality
4. **[CRITICAL]** 7 image-in-link without alt text — Accessibility > Alt Text Quality
5. **[CRITICAL]** 8 button(s) with no accessible text — Accessibility > Link & Button Quality

---

## Lighthouse Scores

| Category | Score |
|----------|-------|
| Performance | 53 |
| Accessibility | 80 |
| Best Practices | 100 |
| SEO | 85 |

---

## Security

### Security Headers (D — 45/100)

*4 of 10 headers properly configured*

- **[WARNING]** HSTS is missing includeSubDomains — Without includeSubDomains, subdomains can still be accessed over HTTP.
- **[PASS]** X-Content-Type-Options is properly configured
- **[PASS]** X-Frame-Options is properly configured
- **[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 not present

### 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 78 days)
- **[PASS]** Certificate chain has 2 certificates
- **[PASS]** Certificate uses modern signature algorithm
- **[PASS]** Certificate covers 6 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 (F — 20/100)

*0 of 2 external resources have SRI*

- **[WARNING]** External script from analytics.sorbonne-universite.fr lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from admin-pipeline.upsun-fr-3.observability-pipeline.blackfire.io 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 (B — 81/100)

*1.1 MB transferred, 47 requests*

- **[PASS]** Page weighs 2.5 MB (1.1 MB transferred)
- **[INFO]** Fonts are 210 KB — consider subsetting or using system fonts — Subset fonts to include only used characters, or switch to system font stacks.
- **[PASS]** 47 HTTP requests
- **[INFO]** Estimated 0.24 g CO2 per page load

### Third-Party Impact (A — 85/100)

*31% third-party, 0 ms blocking*

- **[INFO]** Third-party code accounts for 31% of page weight (355.7 KiB of 1.1 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 — 65/100)

*12 images, 0 KB saveable*

- **[WARNING]** https://www.sorbonne-universite.fr/sites/default/f... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://www.sorbonne-universite.fr/themes/custom/b... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.

### JS Execution Cost (F — 20/100)

*3802ms total JS execution*

- **[WARNING]** https://www.sorbonne-universite.fr/sites/default/f...: 1931ms CPU time
- **[WARNING]** https://www.sorbonne-universite.fr/: 1038ms CPU time
- **[WARNING]** https://admin-pipeline.upsun-fr-3.observability-pi...: 501ms CPU time
- **[WARNING]** Unattributable: 271ms CPU time
- **[INFO]** https://analytics.sorbonne-universite.fr/matomo/ma...: 61ms CPU time
- **[INFO]** Third-party scripts: 833ms (22% of total)

### Font Loading (A+ — 100/100)

*12 fonts (210 KB)*

- **[INFO]** 12 font(s) use font-display: swap (FOUT risk but functional)

### JS Bundles (C — 60/100)

*7 scripts, 265 KB unused*

- **[WARNING]** https://www.sorbonne-universite.fr/sites/default/f...: 197 KB unused (66%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://analytics.sorbonne-universite.fr/matomo/ma...: 38 KB unused (59%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://admin-pipeline.upsun-fr-3.observability-pi...: 30 KB unused (32%) — Consider code splitting or tree shaking to reduce unused code.
- **[INFO]** Total unused JavaScript: 265 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)

*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 <head>

### Third-Party Resources (A+ — 100/100)

*No third-party resources detected*


---

## Content Quality

### Links (A+ — 100/100)

*200 links checked, 200 healthy, 0 broken*

- **[PASS]** 200 of 200 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 (F — 0/100)

*No Open Graph tags found — social sharing previews will be generic.*

- **[WARNING]** No Open Graph meta tags found — Without og:title, og:description, and og:image, social media platforms will generate a generic preview when your page is shared.

### Structured Data (C — 40/100)

*No structured data (JSON-LD) found.*

- **[INFO]** No structured data (JSON-LD) found — Adding structured data helps search engines understand your content and can enable rich results.

---

## Infrastructure

### DNS Records (A — 90/100)

*4 A records, 28 ms lookup*

- **[PASS]** Resolves to 4 IPv4 address(es)
- **[INFO]** No IPv6 (AAAA) records
- **[INFO]** No NS records found
- **[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: 28 ms

### 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+ — 95/100)

*robots.txt present, sitemap with 2 URLs*

- **[PASS]** robots.txt is present
- **[PASS]** sitemap.xml is present
- **[PASS]** sitemap.xml is valid XML
- **[PASS]** sitemap.xml contains 2 entries
- **[PASS]** Sitemap index with 2 child sitemaps
- **[INFO]** robots.txt does not reference a sitemap — Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

### URL Variants (A+ — 100/100)

*www/non-www, trailing slash, HTTP→HTTPS*

- **[PASS]** www/non-www redirect configured correctly (preferred: www)
- **[PASS]** HTTP correctly 301-redirects to HTTPS

### Domain Intelligence (A+ — 100/100)

*sorbonne-universite.fr — via GIP RENATER, 15 years, 5 months old, hosted on Fastly*

- **[PASS]** Domain registered until Dec 12, 2026 (8 months remaining)
- **[PASS]** Registrar: GIP RENATER
- **[PASS]** Hosting: Fastly

---

## 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+ — 100/100)

*Lang attribute + Content-Language header*

- **[PASS]** <html lang> attribute is present
- **[PASS]** <html lang> value is valid
- **[PASS]** Content-Language header is set
- **[PASS]** Language signals are consistent

### 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 — 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

*2 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 (strong confidence) — Indicators suggesting GDPR may be relevant: European language detected: fr; European TLD detected: .fr. EU General Data Protection Regulation — governs collection and processing of personal data of EU residents.
- **[INFO]** HIPAA indicators detected (weak confidence) — Indicators suggesting HIPAA may be relevant: Text mentions: phi. Health Insurance Portability and Accountability Act — protects sensitive patient health information.

### 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 (A+ — 100/100)

*Fastly (HIT, MISS)*

- **[PASS]** Site is served via Fastly CDN
- **[PASS]** CDN cache status: HIT, MISS

### HTTP Caching (D — 50/100)

*no-store (uncacheable)*

- **[INFO]** Cache-Control: no-store prevents all caching — Intentional for dynamic content, but increases server load for every page view.
- **[PASS]** ETag present — enables conditional (304) responses
- **[PASS]** Last-Modified header present

### Transport Security (A — 90/100)

*HTTP/3, HSTS, and TLS version analysis*

- **[INFO]** HTTP/3 (QUIC) not advertised — HTTP/3 eliminates head-of-line blocking. If your CDN supports it, consider enabling it.
- **[PASS]** HSTS enabled (base policy)
- **[INFO]** HSTS missing includeSubDomains — Without includeSubDomains, HSTS only protects the exact domain.
- **[PASS]** TLS 1.3 in use (fastest handshake, 1-RTT)

---

## Accessibility

### Landmark Structure (A — 85/100)

*4 landmarks*

- **[PASS]** <main> landmark present
- **[PASS]** 1 <nav> landmark(s) found
- **[WARNING]** Skip navigation link is missing (WCAG 2.4.1) — Add a skip link as the first focusable element so keyboard users can bypass repeated navigation.

### Heading Hierarchy (F — 0/100)

*62 headings, 7 skip(s)*

- **[WARNING]** Multiple H1 headings (26 found) — A page should have only one H1. Multiple H1s dilute the document outline.
- **[WARNING]** Heading level skipped: H1 → H4 (missing H2) — Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.
- **[WARNING]** Heading level skipped: H1 → H4 (missing H2) — Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.
- **[WARNING]** Heading level skipped: H1 → H4 (missing H2) — Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.
- **[WARNING]** Heading level skipped: H1 → H4 (missing H2) — Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.
- **[WARNING]** Heading level skipped: H2 → H4 (missing H3) — Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.
- **[WARNING]** Heading level skipped: H1 → H4 (missing H2) — Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.
- **[WARNING]** Heading level skipped: H1 → H3 (missing H2) — Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.

### Alt Text Quality (F — 30/100)

*9 of 24 images have issues*

- **[CRITICAL]** 9 image(s) missing alt attribute — Images without alt text are invisible to screen readers.
- **[CRITICAL]** 7 image-in-link without alt text — An image inside a link with no alt creates an empty link.
- **[PASS]** 15 image(s) with good alt text

### Form Accessibility (A — 92/100)

*1 of 4 controls have issues*

- **[WARNING]** 1 control(s) rely on placeholder only — Placeholder text disappears on focus and is not a reliable label.
- **[PASS]** 3 control(s) properly labeled

### Link & Button Quality (F — 18/100)

*17 issue(s) across 335 links and 117 buttons*

- **[CRITICAL]** 9 link(s) with no accessible text — Links without text are announced as raw URLs by screen readers.
- **[CRITICAL]** 2 image-only link(s) without alt text
- **[WARNING]** 19 link(s) open in new tab without warning — Add '(opens in new tab)' to link text or aria-label.
- **[CRITICAL]** 8 button(s) with no accessible text
- **[PASS]** 305 link(s) with descriptive text

---

## UX

### 404 Error Page (B — 80/100)

*HTTP 404, custom page*

- **[PASS]** Correct 404 status code returned
- **[PASS]** Custom styled 404 page
- **[PASS]** Navigation links present on 404 page
- **[PASS]** Homepage link present on 404 page

### Favicon & Branding (F — 15/100)

*1 icon(s) detected*

- **[WARNING]** No favicon.ico at site root — Some older browsers, bookmark tools, and RSS readers look for /favicon.ico. Add one as a fallback.
- **[PASS]** HTML icon links detected
- **[INFO]** No apple-touch-icon detected — iOS devices use this when users add your site to their home screen. Add <link rel='apple-touch-icon' sizes='180x180' href='/apple-touch-icon.png'>.

### Web Manifest (D — 40/100)

*Not found*

- **[INFO]** No web manifest found — No manifest at standard paths (/manifest.json, /site.webmanifest). A manifest is optional but enables PWA features like home screen installation and standalone display.

### Dark Mode Support (D — 40/100)

*No dark mode signals*

- **[INFO]** No dark mode signals detected — Consider adding CSS with @media (prefers-color-scheme: dark) and <meta name='color-scheme' content='light dark'>.
- **[INFO]** Detection limited to meta tags and inline styles — External CSS files may contain prefers-color-scheme rules not visible to this scan.

### Print Stylesheet (D — 40/100)

*No print styles*

- **[INFO]** No print-specific styles detected — When users print this page, they get the screen layout including navigation and non-essential elements. Add @media print rules to hide navigation and optimize layout for paper.

### Navigation UX (F — 15/100)

*No navigation patterns*

- **[PASS]** 1 navigation landmark(s) detected
- **[INFO]** No breadcrumbs, search, or skip link detected — These navigation aids help users orient themselves and find content efficiently, especially on large sites.

---

## SEO

### Canonical URL (A+ — 100/100)

*Properly configured*

- **[PASS]** Canonical tag present
- **[PASS]** Canonical is self-referencing
- **[PASS]** Canonical matches final URL after redirects
- **[PASS]** Canonical target returns 200

### Meta Tags (A+ — 95/100)

*Title optimized*

- **[PASS]** Page title is set
- **[PASS]** Title length (42 chars) is optimal
- **[INFO]** Title and H1 have very different wording — Alignment helps users confirm they've reached the right page.

### Content Depth (A+ — 100/100)

*2212 words, Very Difficult*

- **[PASS]** Page has 2212 words — good depth for search engines
- **[INFO]** Reading level: Very Difficult (grade 22)

### Internal Links (A — 85/100)

*318 internal, 17 external*

- **[PASS]** 318 internal links (95%)
- **[PASS]** 97% of links use descriptive anchor text
- **[INFO]** Page has 335 links — consider reducing
- **[INFO]** 318 internal / 17 external links
- **[WARNING]** 2 internal links have no anchor text

### Image SEO (B — 75/100)

*24 images, 3 descriptive filenames*

- **[WARNING]** 88% of images have non-descriptive filenames — Search engines use filenames as a signal. Rename to descriptive names like 'team-photo.jpg'.
- **[INFO]** 9 image(s) missing alt text — see Accessibility tab

### Hreflang

*0 hreflang tags*


---

## Sustainability

### CO2 Per Page Load (A — 85/100)

*0.27g CO2 per view*

- **[PASS]** 0.27g CO2 per page view — This page transfers 1.1 MB, producing an estimated 0.27g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.06g, end-user device 0.21g.
- **[INFO]** At 10,000 monthly views: 32.3 kg CO2/year — With 10,000 page views per month, this page would generate approximately 32.3 kg of CO2 annually — equivalent to charging 4040 smartphones.
- **[PASS]** Green hosting reduces data center emissions

### Green Hosting (A — 85/100)

*Green (cdn)*

- **[PASS]** Fastly CDN uses renewable energy — Since most traffic is served through the CDN, the majority of data transfer energy is renewable.
- **[INFO]** Fastly: 100% renewable energy for edge network
- **[INFO]** Green hosting status based on known provider commitments — Green hosting detection uses a curated database of provider renewable energy commitments. This is not a real-time verification. For authoritative checks, visit thegreenwebfoundation.org.

### Repeat Visit Weight (A+ — 100/100)

*98% cached*

- **[PASS]** 98% reduction on repeat visits — Returning visitors download only 28 KB (vs 1165 KB first visit). 46 of 47 resources are served from browser cache, saving 0.26g CO2 per repeat visit.
- **[INFO]** Repeat visit: 0.01g CO2 (first visit: 0.27g)

### Carbon Budget (A — 85/100)

*16th percentile*

- **[PASS]** 0.27g CO2 — below the sustainability target of 0.50g — Cleaner than an estimated 84% of websites analyzed. This page meets the Web Sustainability Guidelines target.
- **[INFO]** Estimated 16th percentile — Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.

### Transfer Efficiency (B — 80/100)

*77% efficient*

- **[INFO]** Transfer efficiency: 77% — An estimated 265 KB (23%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 265 KB of unused JavaScript. This wasted data produces 0.06g of unnecessary CO2 per page view.

---

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*Generated by [BeaverCheck](https://beavercheck.com) — https://beavercheck.com/results/81347fda-cd58-520d-0055-a8fe63f17fcc*
