# BeaverCheck Audit Report — https://colab.research.google.com

**Date:** April 21, 2026  
**URL:** https://colab.research.google.com  
**Overall Grade:** C (71/100)  
**Report:** https://beavercheck.com/results/b3313003-29a6-4bda-907b-075f051bbaae

## Top Findings

1. **[CRITICAL]** 'unsafe-inline' found in script source — Security > Content Security Policy
2. **[CRITICAL]** HSTS header is missing — Security > Security Headers
3. **[CRITICAL]** Page weighs 16.5 MB (4.9 MB transferred) — Performance > Page Weight Budget
4. **[CRITICAL]** 1 control(s) without accessible label — Accessibility > Form Accessibility
5. **[CRITICAL]** 3 link(s) with no accessible text — Accessibility > Link & Button Quality

---

## Lighthouse Scores

| Category | Score |
|----------|-------|
| Performance | 25 |
| Accessibility | 92 |
| Best Practices | 69 |
| SEO | 91 |

---

## Security

### Security Headers (D — 40/100)

*4 of 10 headers properly configured*

- **[CRITICAL]** HSTS header is missing — Strict-Transport-Security forces browsers to use HTTPS, preventing downgrade attacks. Add the header with a max-age of at least 1 year.
- **[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.
- **[PASS]** Content-Security-Policy is present
- **[WARNING]** Cross-Origin-Opener-Policy header is missing — COOP isolates your browsing context, preventing cross-origin side-channel attacks. Set to 'same-origin'.
- **[WARNING]** Cross-Origin-Embedder-Policy header is missing — COEP prevents loading cross-origin resources without explicit permission. Required for SharedArrayBuffer and high-resolution timers.
- **[PASS]** X-Powered-By header is not present
- **[WARNING]** Server header reveals version information — The Server header discloses the software version, aiding attackers in targeting known vulnerabilities. Remove the version number.

### Content Security Policy (D — 45/100)

*4 of 10 CSP checks passed*

- **[INFO]** Raw CSP policy
- **[WARNING]** default-src directive is missing — default-src provides a fallback for other directives. Set it to restrict default resource loading.
- **[CRITICAL]** 'unsafe-inline' found in script source — 'unsafe-inline' allows inline <script> tags, defeating CSP against XSS. Remove it and use nonces or hashes instead.
- **[PASS]** No 'unsafe-eval' in script source
- **[PASS]** No wildcard in script source
- **[PASS]** object-src is set to 'none'
- **[PASS]** base-uri is properly restricted
- **[WARNING]** frame-ancestors directive is missing — frame-ancestors controls who can embed your page, preventing clickjacking. Set it to 'self' or 'none'.
- **[WARNING]** form-action directive is missing — form-action restricts where forms can submit data, preventing form hijacking.
- **[INFO]** upgrade-insecure-requests is not set — This directive upgrades HTTP resources to HTTPS automatically, preventing mixed content.

### 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 61 days)
- **[PASS]** Certificate chain has 3 certificates
- **[PASS]** Certificate uses modern signature algorithm
- **[PASS]** Certificate covers 325 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 (D — 40/100)

*2 of 22 external resources have SRI*

- **[PASS]** script from www.gstatic.com has SRI protection
- **[PASS]** script from www.gstatic.com has SRI protection
- **[WARNING]** External script from apis.google.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from apis.google.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from www.googletagmanager.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from fonts.googleapis.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from fonts.googleapis.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from www.google-analytics.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from ssl.gstatic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from www.gstatic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from ssl.gstatic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from www.gstatic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from www.gstatic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from ssl.gstatic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from ssl.gstatic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from ssl.gstatic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from www.google.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from www.google.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from ssl.gstatic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from ssl.gstatic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from ssl.gstatic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from ssl.gstatic.com 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 (F — 0/100)

*4.9 MB transferred, 71 requests*

- **[CRITICAL]** Page weighs 16.5 MB (4.9 MB transferred)
- **[WARNING]** JavaScript is 3.3 MB — consider code splitting or lazy loading — Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
- **[INFO]** Fonts are 797 KB — consider subsetting or using system fonts — Subset fonts to include only used characters, or switch to system font stacks.
- **[INFO]** 71 HTTP requests
- **[INFO]** Estimated 1.0 g CO2 per page load

### Third-Party Impact (D — 50/100)

*87% third-party, 0 ms blocking*

- **[WARNING]** Third-party code accounts for 87% of page weight (4.2 MiB of 4.9 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)

*5 images, 0 KB saveable*

- **[WARNING]** data:image/webp;base64,UklGRuAWAABXRUJQVlA4TNMWAAA... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.

### JS Execution Cost (F — 20/100)

*11610ms total JS execution*

- **[WARNING]** https://ssl.gstatic.com/colaboratory-static/common...: 3093ms CPU time
- **[WARNING]** https://www.gstatic.com/recaptcha/releases/zFuF-tb...: 2190ms CPU time
- **[WARNING]** https://ssl.gstatic.com/colaboratory-static/common...: 2025ms CPU time
- **[WARNING]** https://colab.research.google.com/: 1131ms CPU time
- **[WARNING]** Unattributable: 824ms CPU time
- **[WARNING]** Third-party scripts: 9744ms (84% of total)

### Font Loading (A+ — 100/100)

*12 fonts (797 KB)*

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

### JS Bundles (F — 20/100)

*27 scripts, 2.3 MB unused*

- **[WARNING]** https://ssl.gstatic.com/colaboratory-static/common...: 914 KB unused (58%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://ssl.gstatic.com/colaboratory-static/common...: 603 KB unused (72%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://www.gstatic.com/recaptcha/releases/zFuF-tb...: 176 KB unused (49%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://www.gstatic.com/recaptcha/releases/zFuF-tb...: 176 KB unused (49%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://www.gstatic.com/recaptcha/releases/zFuF-tb...: 176 KB unused (49%) — Consider code splitting or tree shaking to reduce unused code.
- **[INFO]** Total unused JavaScript: 2.3 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)

*No optimization needed*

- **[PASS]** No resource hint issues

### Page Weight Inventory (F — 15/100)

*71 resources · 4.9 MB · 2.3 MB savings available*

- **[WARNING]** Page weight 3.9 MB over 1MB target
- **[INFO]** ~2.3 MB of savings available
- **[WARNING]** 56 third-party resources (87% of weight)
- **[INFO]** 5 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 — 96/100)

*88 links checked, 86 healthy, 0 broken*

- **[PASS]** 86 of 88 links are healthy
- **[INFO]** Long redirect chain: https://www.google.com/url?q=https%3A%2F%2Faist... (4 hops)
- **[INFO]** Long redirect chain: https://www.google.com/url?q=https%3A%2F%2Faist... (4 hops)

### Mixed Content (A+ — 100/100)

*No mixed content detected — all resources use HTTPS.*

- **[PASS]** No mixed content detected — all resources use HTTPS

### Open Graph (C — 70/100)

*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 (12 characters) — Ideal length is 25–60 characters for social sharing previews.
- **[INFO]** Missing og:url — The og:url tag specifies the canonical URL for the shared content.
- **[INFO]** Missing og:site_name — The og:site_name tag displays the website name in social previews.
- **[INFO]** Missing twitter:card — Without twitter:card, Twitter falls back to Open Graph tags. Adding it gives you more control.

### 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 (B — 75/100)

*1 A records, 28 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.
- **[PASS]** Has 1 IPv6 (AAAA) record(s)
- **[WARNING]** CNAME record at zone apex — A CNAME at the zone apex can break MX and NS records. Use ALIAS/ANAME or A records instead.
- **[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 (A+ — 100/100)

*IPv6 reachable (2 ms)*

- **[PASS]** IPv6 is configured and reachable at 2607:f8b0:4006:816::200e

### 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 (A+ — 100/100)

*google.com — via MarkMonitor Inc., 29 years old*

- **[PASS]** Domain registered until Sep 14, 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: MarkMonitor Inc.
- **[WARNING]** Registrar lock is NOT enabled — The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.

---

## 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)

*2 trackers detected*

- **[INFO]** 2 third-party trackers detected — Found 1 analytics, 0 advertising, 0 marketing, 1 tag manager trackers.
- **[WARNING]** Trackers detected but no cookie policy found — This page loads 2 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 · 2 trackers · 0 pre-consent*

- **[INFO]** 2 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

*2 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]** 2 third-party services across 2 categories — 2 third-party services detected across 2 categories: Analytics (1), Security (1). Each of these services receives some user data from your site visitors.
- **[INFO]** Google Analytics (Analytics) — Detected via script URL. Typically collects: Page views, User behavior, Demographics, Device info, IP address. Privacy policy: https://policies.google.com/privacy. Data Processing Agreement available.
- **[INFO]** reCAPTCHA (Security) — Detected via script URL. Typically collects: Browser behavior, Device info, IP address. Privacy policy: https://policies.google.com/privacy. Data Processing Agreement available.

### 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 (B — 75/100)

*no-cache, must-revalidate*

- **[PASS]** Cache-Control header is set
- **[PASS]** ETag present — enables conditional (304) responses

### Transport Security (A — 85/100)

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

- **[PASS]** HTTP/3 (QUIC) supported — The server advertises HTTP/3 via Alt-Svc for faster connections on mobile networks.
- **[WARNING]** Missing Strict-Transport-Security header — HSTS tells browsers to only use HTTPS, preventing SSL stripping attacks.
- **[PASS]** TLS 1.3 in use (fastest handshake, 1-RTT)

---

## Accessibility

### Landmark Structure (B — 70/100)

*30 landmarks*

- **[PASS]** <main> landmark present
- **[WARNING]** No <nav> landmark found
- **[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 (A+ — 100/100)

*16 headings*

- **[PASS]** Single H1 present

### Alt Text Quality (A+ — 95/100)

*1 of 2 images have issues*

- **[WARNING]** 1 image(s) with filename as alt text
- **[PASS]** 1 image(s) with good alt text

### Form Accessibility (A — 85/100)

*1 of 2 controls have issues*

- **[CRITICAL]** 1 control(s) without accessible label — Form controls need a <label>, aria-label, or aria-labelledby for screen readers.
- **[PASS]** 1 control(s) properly labeled

### Link & Button Quality (C — 58/100)

*3 issue(s) across 77 links and 0 buttons*

- **[CRITICAL]** 3 link(s) with no accessible text — Links without text are announced as raw URLs by screen readers.
- **[WARNING]** 59 link(s) open in new tab without warning — Add '(opens in new tab)' to link text or aria-label.
- **[PASS]** 15 link(s) with descriptive text

---

## UX

### 404 Error Page (F — 25/100)

*HTTP 403, custom page*

- **[WARNING]** Unexpected status code: HTTP 403 — Expected HTTP 404 but received 403. This may confuse search engine crawlers.
- **[PASS]** Custom styled 404 page

### Favicon & Branding (F — 30/100)

*2 icon(s) detected*

- **[PASS]** favicon.ico present at site root
- **[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 — 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 (A — 90/100)

*Title: 24 chars*

- **[PASS]** Page title is set
- **[WARNING]** Title is only 24 characters — consider expanding
- **[INFO]** Title and H1 are identical — Consider differentiating — the title is for search results, the H1 is for the page.

### Content Depth (A — 85/100)

*1803 words, Difficult*

- **[PASS]** Page has 1803 words — good depth for search engines
- **[INFO]** Text-to-HTML ratio is 2% — Very low ratio suggests heavy framework overhead or boilerplate.
- **[INFO]** Reading level: Difficult (grade 13)

### Internal Links (A+ — 100/100)

*50 internal, 27 external*

- **[PASS]** 50 internal links (65%)
- **[PASS]** 96% of links use descriptive anchor text
- **[INFO]** 50 internal / 27 external links

### Image SEO (A+ — 100/100)

*2 images, 2 descriptive filenames*

- **[PASS]** All images have descriptive filenames

### Hreflang

*0 hreflang tags*


---

## Sustainability

### CO2 Per Page Load (D — 50/100)

*1.15g CO2 per view*

- **[WARNING]** 1.15g CO2 per page view — This page transfers 4.9 MB, producing an estimated 1.15g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.03g, network 0.24g, end-user device 0.88g.
- **[INFO]** At 10,000 monthly views: 137.8 kg CO2/year — With 10,000 page views per month, this page would generate approximately 137.8 kg of CO2 annually — equivalent to charging 17220 smartphones.
- **[PASS]** Green hosting reduces data center emissions

### Green Hosting (B — 80/100)

*Green (hosting)*

- **[PASS]** TornadoServer uses renewable energy
- **[INFO]** TornadoServer: Verified by the Green Web Foundation
- **[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 54 KB (vs 4966 KB first visit). 65 of 71 resources are served from browser cache, saving 1.14g CO2 per repeat visit.
- **[INFO]** Repeat visit: 0.01g CO2 (first visit: 1.15g)

### Carbon Budget (D — 50/100)

*65th percentile*

- **[WARNING]** 1.15g CO2 — above the median website (0.60g) — Heavier than an estimated 35% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
- **[INFO]** Estimated 65th percentile — Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.

### Transfer Efficiency (D — 40/100)

*53% efficient*

- **[WARNING]** Transfer efficiency: 53% — An estimated 2334 KB (47%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 2334 KB of unused JavaScript. This wasted data produces 0.54g of unnecessary CO2 per page view.

---

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*Generated by [BeaverCheck](https://beavercheck.com) — https://beavercheck.com/results/b3313003-29a6-4bda-907b-075f051bbaae*