# BeaverCheck Audit Report — https://sbb.ch

**Date:** April 22, 2026  
**URL:** https://sbb.ch  
**Overall Grade:** C (73/100)  
**Report:** https://beavercheck.com/results/32f64fee-f505-447d-be72-a46ffdf7ad5b

## 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]** No <main> landmark found — Accessibility > Landmark Structure
4. **[CRITICAL]** No favicon or icon links detected — Accessibility > Favicon & Branding
5. **[WARNING]** 86 third-party resources (100% of weight) — Performance > Page Weight Inventory

---

## Lighthouse Scores

| Category | Score |
|----------|-------|
| Performance | 37 |
| Accessibility | 91 |
| Best Practices | 96 |
| SEO | 100 |

---

## Security

### Security Headers (C — 55/100)

*5 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
- **[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.
- **[PASS]** Referrer-Policy is properly configured
- **[PASS]** Permissions-Policy is set
- **[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 89 days)
- **[PASS]** Certificate chain has 3 certificates
- **[PASS]** Certificate uses modern signature algorithm
- **[PASS]** Certificate covers 7 domain(s)
- **[PASS]** Certificate is issued by a trusted CA

### Cookie Security (A+ — 100/100)

*1 cookies analyzed, 3 checks passed*

- **[PASS]** Cookie 'AL_SESS-S' has the Secure flag
- **[PASS]** Cookie 'AL_SESS-S' has the HttpOnly flag
- **[PASS]** Cookie 'AL_SESS-S' has SameSite=None

---

## 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+ — 100/100)

*DMARC: reject*

- **[PASS]** DMARC policy is reject — strongest protection

### Permissions-Policy (C — 60/100)

*16 directives, 0 missing*

- **[INFO]** accelerometer=(self)
- **[INFO]** ambient-light-sensor=(self)
- **[INFO]** autoplay=(self)
- **[INFO]** camera=(self)
- **[INFO]** display-capture=(self)
- **[INFO]** document-domain=(self)
- **[INFO]** encrypted-media=(self)
- **[INFO]** fullscreen=(self)
- **[INFO]** geolocation=(self)
- **[INFO]** gyroscope=(self)
- **[INFO]** magnetometer=(self)
- **[INFO]** microphone=(self)
- **[INFO]** midi=(self)
- **[INFO]** payment=(self)
- **[INFO]** usb=(self)
- **[INFO]** xr-spatial-tracking=(self)

### CORS Configuration (B — 80/100)

*No CORS headers*

- **[PASS]** No CORS headers present — secure default

---

## Performance

### Page Weight Budget (B — 84/100)

*1.0 MB transferred, 87 requests*

- **[PASS]** Page weighs 4.3 MB (1.0 MB transferred)
- **[WARNING]** JavaScript is 920 KB — consider code splitting or lazy loading — Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
- **[INFO]** 87 HTTP requests
- **[INFO]** Estimated 0.22 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 (1.0 MiB of 1.0 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 (A+ — 100/100)

*No images on this page*

- **[PASS]** No images on this page

### JS Execution Cost (F — 20/100)

*3515ms total JS execution*

- **[WARNING]** https://www.sbb.ch/_next/static/chunks/826-048dc7d...: 829ms CPU time
- **[WARNING]** https://www.sbb.ch/_next/static/chunks/7934-cb647c...: 730ms CPU time
- **[WARNING]** https://www.sbb.ch/_next/static/chunks/6416-6146ec...: 374ms CPU time
- **[WARNING]** https://www.sbb.ch/de: 359ms CPU time
- **[WARNING]** https://www.sbb.ch/_next/static/chunks/4bd1b696-27...: 346ms CPU time
- **[WARNING]** Third-party scripts: 3515ms (100% of total)

### Font Loading (A+ — 100/100)

*3 fonts (54 KB)*

- **[INFO]** 3 font(s) use font-display: swap (FOUT risk but functional)

### JS Bundles (D — 40/100)

*35 scripts, 320 KB unused*

- **[WARNING]** https://www.sbb.ch/_next/static/chunks/6416-6146ec...: 107 KB unused (49%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://www.sbb.ch/_next/static/chunks/app/%5Bloca...: 79 KB unused (50%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://www.sbb.ch/_next/static/chunks/826-048dc7d...: 75 KB unused (45%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://www.sbb.ch/_next/static/chunks/2566-ffe1f4...: 33 KB unused (51%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://siteintercept.qualtrics.com/dxjsmodule/12....: 25 KB unused (71%) — Consider code splitting or tree shaking to reduce unused code.
- **[INFO]** Total unused JavaScript: 320 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)

### Page Weight Inventory (B — 80/100)

*87 resources · 1.0 MB · 320 KB savings available*

- **[WARNING]** Page weight 48 KB over 1MB target
- **[INFO]** ~320 KB of savings available
- **[WARNING]** 86 third-party resources (100% of weight)
- **[INFO]** 1 resources over 200KB

### 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)

*11 links checked, 11 healthy, 0 broken*

- **[PASS]** 11 of 11 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+ — 95/100)

*1 A records, 177 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]** 5 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.
- **[PASS]** SPF record present in TXT
- **[PASS]** DNS resolution time: 177 ms

### Redirect Chain (A — 90/100)

*1 redirect(s), 205 ms total*

- **[PASS]** Single redirect
- **[INFO]** WWW normalization redirect

### 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 (B — 75/100)

*no robots.txt, no sitemap*

- **[INFO]** No robots.txt found — robots.txt is optional but recommended. It tells search engine crawlers which pages to index.
- **[INFO]** No sitemap.xml found — A sitemap helps search engines discover and index your pages more efficiently.

### URL Variants (A+ — 100/100)

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

- **[PASS]** HTTP correctly 301-redirects to HTTPS

### Domain Intelligence

*Domain intelligence data not available*


---

## 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]** 1 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]** <html lang> attribute is present
- **[PASS]** <html lang> value is valid
- **[INFO]** No Content-Language HTTP header
- **[INFO]** Language signals are inconsistent — The <html lang> 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 4 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)

*1 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

*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 (F — 30/100)

*No cache headers*

- **[WARNING]** No Cache-Control header found — Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

### 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 (D — 40/100)

*No landmarks*

- **[CRITICAL]** No <main> landmark found — Screen reader users cannot quickly navigate to the primary content. Wrap your main content in <main>.
- **[WARNING]** No <nav> landmark found
- **[INFO]** No banner (header) landmark
- **[INFO]** No contentinfo (footer) landmark
- **[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 (B — 80/100)

*No headings*

- **[WARNING]** No headings found — Headings (H1-H6) create the document outline for screen reader navigation.

### Alt Text Quality (A+ — 100/100)

*No images*

- **[PASS]** No images on this page

### Form Accessibility (A+ — 100/100)

*No form controls*

- **[PASS]** No form controls on this page

### Link & Button Quality (A+ — 100/100)

*No links or buttons*

- **[PASS]** No links or buttons on this page

---

## UX

### 404 Error Page (F — 0/100)

*HTTP 202, bare page*

- **[WARNING]** Unexpected status code: HTTP 202 — Expected HTTP 404 but received 202. This may confuse search engine crawlers.
- **[WARNING]** Bare server default 404 page — The 404 page has no custom styling. Users hitting a broken link see a generic error with no way to navigate back. Add a custom 404 page with your site navigation and a search bar.

### Favicon & Branding (F — 0/100)

*No icons 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.
- **[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'>.
- **[CRITICAL]** No favicon or icon links detected — Your site will show the browser's generic page icon in tabs, bookmarks, and home screens.

### 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 — 0/100)

*No navigation patterns*

- **[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 (B — 80/100)

*Minor issues*

- **[WARNING]** No canonical tag found — Search engines will determine the canonical URL themselves, which may cause duplicate content issues.

### Meta Tags (B — 80/100)

*Missing title*

- **[CRITICAL]** No page title found — The <title> tag is the most important on-page SEO element.

### Content Depth (F — 0/100)

*No content*

- **[CRITICAL]** Page has only 0 words — nearly empty — Search engines need substantive text content to understand and rank a page.
- **[CRITICAL]** No body text detected

### Internal Links (A — 90/100)

*No links*

- **[PASS]** No links found on this page
- **[WARNING]** Dead-end page — no outgoing internal links

### Image SEO (A+ — 100/100)

*No images*

- **[PASS]** No images on this page

### Hreflang

*0 hreflang tags*


---

## Sustainability

### CO2 Per Page Load (A — 85/100)

*0.30g CO2 per view*

- **[PASS]** 0.30g CO2 per page view — This page transfers 1.0 MB, producing an estimated 0.30g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.05g, network 0.05g, end-user device 0.19g.
- **[INFO]** At 10,000 monthly views: 35.6 kg CO2/year — With 10,000 page views per month, this page would generate approximately 35.6 kg of CO2 annually — equivalent to charging 4446 smartphones.

### Green Hosting (D — 40/100)

*Not green*

- **[INFO]** No confirmed renewable energy commitment detected — Consider providers like Cloudflare, Google Cloud, or Vercel that match 100% of their energy use with renewables.
- **[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)

*97% cached*

- **[PASS]** 97% reduction on repeat visits — Returning visitors download only 29 KB (vs 1071 KB first visit). 86 of 87 resources are served from browser cache, saving 0.29g CO2 per repeat visit.
- **[INFO]** Repeat visit: 0.01g CO2 (first visit: 0.30g)

### Carbon Budget (A — 85/100)

*19th percentile*

- **[PASS]** 0.30g CO2 — below the sustainability target of 0.50g — Cleaner than an estimated 81% of websites analyzed. This page meets the Web Sustainability Guidelines target.
- **[INFO]** Estimated 19th percentile — Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.

### Transfer Efficiency (C — 60/100)

*70% efficient*

- **[WARNING]** Transfer efficiency: 70% — An estimated 320 KB (30%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 320 KB of unused JavaScript. This wasted data produces 0.09g of unnecessary CO2 per page view.

---

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*Generated by [BeaverCheck](https://beavercheck.com) — https://beavercheck.com/results/32f64fee-f505-447d-be72-a46ffdf7ad5b*
