# BeaverCheck Audit Report — https://bsky.app

**Date:** April 12, 2026  
**URL:** https://bsky.app  
**Overall Grade:** C (72/100)  
**Report:** https://beavercheck.com/results/dd5ca38a-38c1-4008-8639-e55afa897668

## Top Findings

1. **[CRITICAL]** Content-Security-Policy header is missing — Security > Security Headers
2. **[CRITICAL]** Cookie 'AWSALB' is missing the Secure flag — Security > Cookie Security
3. **[CRITICAL]** No Content-Security-Policy header found — Security > Content Security Policy
4. **[CRITICAL]** No <main> landmark found — Accessibility > Landmark Structure
5. **[WARNING]** Cookie 'AWSALB' has no SameSite attribute — Security > Cookie Security

---

## Lighthouse Scores

| Category | Score |
|----------|-------|
| Performance | 32 |
| Accessibility | 74 |
| Best Practices | 100 |
| SEO | 92 |

---

## Security

### Security Headers (D — 50/100)

*5 of 10 headers properly configured*

- **[PASS]** Strict-Transport-Security is properly configured (consider adding preload)
- **[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 306 days)
- **[PASS]** Certificate chain has 3 certificates
- **[PASS]** Certificate uses modern signature algorithm
- **[PASS]** Certificate covers 1 domain(s)
- **[PASS]** Certificate is issued by a trusted CA

### Cookie Security (B — 70/100)

*2 cookies analyzed, 2 checks passed*

- **[CRITICAL]** Cookie 'AWSALB' is missing the Secure flag — Without the Secure flag, this cookie can be sent over unencrypted HTTP, exposing it to interception.
- **[WARNING]** Cookie 'AWSALB' is missing the HttpOnly flag — Without HttpOnly, this cookie can be accessed by JavaScript, making it vulnerable to XSS-based theft.
- **[WARNING]** Cookie 'AWSALB' has no SameSite attribute — Without an explicit SameSite attribute, browser default behavior varies. Set SameSite=Lax or Strict.
- **[PASS]** Cookie 'AWSALBCORS' has the Secure flag
- **[WARNING]** Cookie 'AWSALBCORS' is missing the HttpOnly flag — Without HttpOnly, this cookie can be accessed by JavaScript, making it vulnerable to XSS-based theft.
- **[PASS]** Cookie 'AWSALBCORS' has SameSite=None

---

## Advanced Security

### Subresource Integrity (F — 20/100)

*0 of 4 external resources have SRI*

- **[WARNING]** External script from web-cdn.bsky.app lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from web-cdn.bsky.app lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from web-cdn.bsky.app lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from web-cdn.bsky.app 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*

- **[PASS]** security.txt is present — good practice
- **[PASS]** No sensitive files exposed

### Email Security (A+ — 100/100)

*DMARC: reject*

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

### 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 (F — 14/100)

*3.5 MB transferred, 68 requests*

- **[WARNING]** Page weighs 9.0 MB (3.5 MB transferred)
- **[WARNING]** JavaScript is 2.2 MB — consider code splitting or lazy loading — Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
- **[INFO]** Fonts are 345 KB — consider subsetting or using system fonts — Subset fonts to include only used characters, or switch to system font stacks.
- **[INFO]** 68 HTTP requests
- **[INFO]** Estimated 0.73 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 (3.5 MiB of 3.5 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 — 85/100)

*42 images, 0 KB saveable*

- **[PASS]** All images are well-optimized

### JS Execution Cost (F — 20/100)

*9873ms total JS execution*

- **[WARNING]** https://web-cdn.bsky.app/static/js/8918.42b29087.j...: 5453ms CPU time
- **[WARNING]** https://web-cdn.bsky.app/static/js/main.53d50458.j...: 2954ms CPU time
- **[WARNING]** Unattributable: 871ms CPU time
- **[WARNING]** https://bsky.app/: 416ms CPU time
- **[INFO]** https://web-cdn.bsky.app/static/js/8930.c7cd4580.c...: 180ms CPU time
- **[WARNING]** Third-party scripts: 9457ms (96% of total)

### Font Loading (A+ — 100/100)

*1 fonts (345 KB)*

- **[INFO]** 1 font(s) use font-display: swap (FOUT risk but functional)

### JS Bundles (F — 20/100)

*4 scripts, 1.4 MB unused*

- **[WARNING]** https://web-cdn.bsky.app/static/js/main.53d50458.j...: 663 KB unused (77%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://web-cdn.bsky.app/static/js/8918.42b29087.j...: 590 KB unused (49%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://web-cdn.bsky.app/static/js/8930.c7cd4580.c...: 150 KB unused (91%) — Consider code splitting or tree shaking to reduce unused code.
- **[INFO]** Total unused JavaScript: 1.4 MB

### 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)

*3 hints, 0 missing preconnects*

- **[PASS]** Page uses 3 resource hint(s)

### 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)

*13 links checked, 13 healthy, 0 broken*

- **[PASS]** 13 of 13 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 (B — 80/100)

*Open Graph tags are partially configured — some improvements recommended.*

- **[WARNING]** Missing og:description — The og:description tag controls the description in social sharing previews.
- **[INFO]** og:title is short (7 characters) — Ideal length is 25–60 characters for social sharing previews.
- **[INFO]** Missing og:type — The og:type tag helps social platforms categorize the content.

### 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+ — 100/100)

*3 A records, 84 ms lookup*

- **[PASS]** Resolves to 3 IPv4 address(es)
- **[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.
- **[PASS]** SPF record present in TXT
- **[PASS]** DNS resolution time: 84 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+ — 100/100)

*robots.txt present, sitemap with 1307 URLs*

- **[PASS]** robots.txt is present
- **[PASS]** sitemap.xml is present
- **[PASS]** sitemap.xml is valid XML
- **[PASS]** sitemap.xml contains 1307 entries
- **[PASS]** Sitemap index with 1307 child sitemaps
- **[PASS]** robots.txt references sitemap

### URL Variants (A+ — 100/100)

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

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

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

*bsky.app — via Squarespace Domains II LLC., 3 years, 7 months old, hosted on AWS*

- **[PASS]** Domain registered until Sep 27, 2028 (2 years, 5 months remaining)
- **[INFO]** DNSSEC is not enabled — DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
- **[PASS]** Registrar: Squarespace Domains II LLC.
- **[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
- **[PASS]** 2 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)

*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

*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 (includeSubDomains)
- **[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 — 30/100)

*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 (C — 55/100)

*3 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
- **[PASS]** Apple touch icon present
- **[PASS]** Multiple icon sizes detected

### 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 (B — 70/100)

*Dark mode detected*

- **[PASS]** Dark-specific theme-color detected — A theme-color with media='(prefers-color-scheme: dark)' adapts the browser toolbar for dark mode.
- **[PASS]** prefers-color-scheme CSS detected in inline styles
- **[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 (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 — 90/100)

*Title: 7 chars*

- **[PASS]** Page title is set
- **[WARNING]** Title is only 7 characters — consider expanding

### Content Depth (F — 10/100)

*1 words, Difficult*

- **[CRITICAL]** Page has only 1 words — nearly empty — Search engines need substantive text content to understand and rank a page.
- **[INFO]** Text-to-HTML ratio is 0% — Very low ratio suggests heavy framework overhead or boilerplate.
- **[INFO]** Reading level: Difficult (grade 8)
- **[WARNING]** Thin content — only 1 words

### 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 (D — 50/100)

*0.98g CO2 per view*

- **[INFO]** 0.98g CO2 per page view — This page transfers 3.5 MB, producing an estimated 0.98g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.18g, network 0.17g, end-user device 0.63g.
- **[INFO]** At 10,000 monthly views: 117.5 kg CO2/year — With 10,000 page views per month, this page would generate approximately 117.5 kg of CO2 annually — equivalent to charging 14687 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)

*100% cached*

- **[PASS]** 100% reduction on repeat visits — Returning visitors download only 3 KB (vs 3540 KB first visit). 67 of 68 resources are served from browser cache, saving 0.98g CO2 per repeat visit.
- **[INFO]** Repeat visit: 0.00g CO2 (first visit: 0.98g)

### Carbon Budget (D — 50/100)

*60th percentile*

- **[WARNING]** 0.98g CO2 — above the median website (0.60g) — Heavier than an estimated 40% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
- **[INFO]** Estimated 60th percentile — Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.

### Transfer Efficiency (C — 60/100)

*60% efficient*

- **[WARNING]** Transfer efficiency: 60% — An estimated 1403 KB (40%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1403 KB of unused JavaScript. This wasted data produces 0.39g of unnecessary CO2 per page view.

---

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*Generated by [BeaverCheck](https://beavercheck.com) — https://beavercheck.com/results/dd5ca38a-38c1-4008-8639-e55afa897668*
