# BeaverCheck Audit Report — https://gitter.im

**Date:** April 22, 2026  
**URL:** https://gitter.im  
**Overall Grade:** C (76/100)  
**Report:** https://beavercheck.com/results/8583b75c-936e-4aa0-850c-92317cdbc092

## 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]** 8 image(s) missing alt attribute — Accessibility > Alt Text Quality
4. **[CRITICAL]** No <main> landmark found — Accessibility > Landmark Structure
5. **[WARNING]** Cross-Origin-Embedder-Policy header is missing — Security > Security Headers

---

## Lighthouse Scores

| Category | Score |
|----------|-------|
| Performance | 91 |
| Accessibility | 81 |
| Best Practices | 96 |
| SEO | 73 |

---

## Security

### Security Headers (F — 30/100)

*3 of 10 headers properly configured*

- **[PASS]** Strict-Transport-Security is properly configured (consider adding preload)
- **[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 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 76 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 (B — 76/100)

*1.3 MB transferred, 27 requests*

- **[PASS]** Page weighs 1.3 MB (1.3 MB transferred)
- **[WARNING]** Images are 1.3 MB — compress or use modern formats — Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
- **[PASS]** 27 HTTP requests
- **[INFO]** Estimated 0.28 g CO2 per page load

### Third-Party Impact (A+ — 100/100)

*No third-party resources*

- **[PASS]** No third-party resources detected

### Text Compression (A+ — 100/100)

*All text resources are compressed*

- **[PASS]** All text resources are compressed

### Image Optimization (C — 60/100)

*20 images, 0 KB saveable*

- **[WARNING]** https://gitter.im/images/trusted-by-logos/trusted-... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://gitter.im/images/gitter-apps@2x.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://gitter.im/images/testimonials/testimonial-... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://gitter.im/images/trusted-by-logos/trusted-... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://gitter.im/images/trusted-by-logos/trusted-... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://gitter.im/images/testimonials/testimonial-... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://gitter.im/images/testimonials/testimonial-... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://gitter.im/images/testimonials/testimonial-... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://gitter.im/images/trusted-by-logos/trusted-... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://gitter.im/images/trusted-by-logos/trusted-... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://gitter.im/images/testimonials/testimonial-... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://gitter.im/images/testimonials/testimonial-... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://gitter.im/images/testimonials/testimonial-... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://gitter.im/images/logo-text-white-nomargin@... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://gitter.im/images/trusted-by-logos/trusted-... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://gitter.im/images/trusted-by-logos/trusted-... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.

### JS Execution Cost (B — 80/100)

*689ms total JS execution*

- **[WARNING]** https://gitter.im/: 529ms CPU time
- **[INFO]** Unattributable: 160ms CPU time
- **[INFO]** Third-party scripts: 160ms (23% of total)

### Font Loading (A+ — 100/100)

*3 fonts (0 KB)*

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

### JS Bundles (A+ — 100/100)

*No JavaScript*

- **[PASS]** No JavaScript bundles

### 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

### Page Weight Inventory (B — 70/100)

*27 resources · 1.3 MB · 0 KB savings available*

- **[WARNING]** Page weight 345 KB over 1MB target
- **[INFO]** 3 third-party resources (0% of weight)
- **[INFO]** 2 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 (D — 63/100)

*40 links checked, 32 healthy, 7 broken*

- **[CRITICAL]** 32 of 40 links are healthy
- **[INFO]** Long redirect chain: https://gitter.im/docs (5 hops)
- **[CRITICAL]** Broken link: https://gitter.im/airbnb — Found in <a href>. Returns HTTP 404.
- **[CRITICAL]** Broken link: https://gitter.im/aws — Found in <a href>. Returns HTTP 404.
- **[CRITICAL]** Broken link: https://gitter.im/google — Found in <a href>. Returns HTTP 404.
- **[CRITICAL]** Broken link: https://gitter.im/microsoft — Found in <a href>. Returns HTTP 404.
- **[CRITICAL]** Broken link: https://gitter.im/mozillascience — Found in <a href>. Returns HTTP 404.
- **[CRITICAL]** Broken link: https://gitter.im/rails — Found in <a href>. Returns HTTP 404.
- **[CRITICAL]** Broken link: https://gitter.im/scala — Found in <a href>. Returns HTTP 404.

### 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, 40 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]** 2 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
- **[PASS]** DNS resolution time: 40 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 (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 — 90/100)

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

- **[WARNING]** HTTP→HTTPS redirect uses 302 instead of 301

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

*gitter.im — hosted on AWS*

- **[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]** <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)

*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.

### Cookie & Tracker Inventory (A+ — 100/100)

*0 cookies · 1 trackers · 0 pre-consent*

- **[INFO]** 1 third-party tracker(s) detected on page

---

## Legal

### Legal Page Ecosystem (F — 10/100)

*1 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.
- **[PASS]** Acceptable Use Policy detected — Found at https://static.element.io/pdfs/acceptable-use-policy.pdf, linked from footer.

### Copyright Notice (B — 80/100)

*© 2025 New Vector Ltd Matrix API Blog Twitter*

- **[INFO]** Copyright year is 2025 (1 year(s) behind) — Copyright year is 2025 — 1 year(s) behind. While copyright protection doesn't depend on the year being current, an outdated notice may suggest the site is not actively maintained. Update to © 2026 or use a range like © 2025–2026.
- **[PASS]** Copyright holder: New Vector Ltd Matrix API Blog Twitter

### 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 (B — 70/100)

*1 compliance badge(s) detected*

- **[PASS]** TRUSTe / TrustArc badge detected — Found via body text: 'truste'. Note: the presence of a badge does not verify the certification is current or valid.

---

## 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 cache headers*

- **[WARNING]** No Cache-Control header found — Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
- **[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 (includeSubDomains)
- **[PASS]** TLS 1.3 in use (fastest handshake, 1-RTT)

---

## Accessibility

### Landmark Structure (C — 60/100)

*3 landmarks*

- **[CRITICAL]** No <main> landmark found — Screen reader users cannot quickly navigate to the primary content. Wrap your main content in <main>.
- **[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 (A — 90/100)

*8 headings*

- **[WARNING]** Multiple H1 headings (5 found) — A page should have only one H1. Multiple H1s dilute the document outline.

### Alt Text Quality (C — 60/100)

*8 of 17 images have issues*

- **[CRITICAL]** 8 image(s) missing alt attribute — Images without alt text are invisible to screen readers.
- **[PASS]** 1 decorative image(s) correctly marked
- **[PASS]** 8 image(s) with good alt text

### Form Accessibility (A+ — 100/100)

*No form controls*

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

### Link & Button Quality (B — 78/100)

*2 issue(s) across 26 links and 0 buttons*

- **[WARNING]** 2 link(s) with generic text — Generic link text like 'click here' doesn't describe the destination.
- **[WARNING]** 8 link(s) open in new tab without warning — Add '(opens in new tab)' to link text or aria-label.
- **[PASS]** 16 link(s) with descriptive text

---

## UX

### 404 Error Page (F — 35/100)

*HTTP 404, bare page*

- **[PASS]** Correct 404 status code returned
- **[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 — 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 (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 (A+ — 95/100)

*Title optimized*

- **[PASS]** Page title is set
- **[PASS]** Title length (41 chars) is optimal
- **[INFO]** Title and H1 have very different wording — Alignment helps users confirm they've reached the right page.

### Content Depth (B — 80/100)

*454 words, Difficult*

- **[PASS]** Page has 454 words of content
- **[INFO]** Reading level: Difficult (grade 10)

### Internal Links (A+ — 100/100)

*11 internal, 15 external*

- **[PASS]** 11 internal links (42%)
- **[PASS]** 92% of links use descriptive anchor text
- **[INFO]** 11 internal / 15 external links

### Image SEO (A+ — 95/100)

*17 images, 17 descriptive filenames*

- **[PASS]** All images have descriptive filenames
- **[INFO]** 8 image(s) missing alt text — see Accessibility tab

### Hreflang

*0 hreflang tags*


---

## Sustainability

### CO2 Per Page Load (A — 85/100)

*0.38g CO2 per view*

- **[PASS]** 0.38g CO2 per page view — This page transfers 1.3 MB, producing an estimated 0.38g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.07g, network 0.07g, end-user device 0.24g.
- **[INFO]** At 10,000 monthly views: 45.4 kg CO2/year — With 10,000 page views per month, this page would generate approximately 45.4 kg of CO2 annually — equivalent to charging 5680 smartphones.

### Green Hosting (D — 50/100)

*Unknown*

- **[INFO]** Hosting provider could not be identified — Without knowing the provider, we cannot determine their energy sourcing. Check with your hosting provider about their renewable energy commitments.
- **[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)

*99% cached*

- **[PASS]** 99% reduction on repeat visits — Returning visitors download only 9 KB (vs 1369 KB first visit). 26 of 27 resources are served from browser cache, saving 0.38g CO2 per repeat visit.
- **[INFO]** Repeat visit: 0.00g CO2 (first visit: 0.38g)

### Carbon Budget (A — 85/100)

*27th percentile*

- **[PASS]** 0.38g CO2 — below the sustainability target of 0.50g — Cleaner than an estimated 73% of websites analyzed. This page meets the Web Sustainability Guidelines target.
- **[INFO]** Estimated 27th percentile — Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.

### Transfer Efficiency (A+ — 100/100)

*100% efficient*

- **[PASS]** Transfer efficiency: 100% — Only 0 KB of potential savings identified. Your page is well-optimized for size.

---

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*Generated by [BeaverCheck](https://beavercheck.com) — https://beavercheck.com/results/8583b75c-936e-4aa0-850c-92317cdbc092*
