# BeaverCheck Audit Report — https://pypi.org **Date:** April 21, 2026 **URL:** https://pypi.org **Overall Grade:** B (88/100) **Report:** https://beavercheck.com/results/66e95cd0-b208-45e9-8fe7-613ce1f34e2b ## Top Findings 1. **[CRITICAL]** 8 image-only link(s) without alt text — Accessibility > Link & Button Quality 2. **[WARNING]** Cross-Origin-Embedder-Policy header is missing — Security > Security Headers 3. **[WARNING]** Cross-Origin-Opener-Policy header is missing — Security > Security Headers 4. **[WARNING]** External script from analytics.python.org lacks integrity attribute — Security > Subresource Integrity 5. **[WARNING]** Referrer-Policy has a weak value — Security > Security Headers --- ## Lighthouse Scores | Category | Score | |----------|-------| | Performance | 71 | | Accessibility | 96 | | Best Practices | 96 | | SEO | 100 | --- ## Security ### Security Headers (B — 80/100) *7 of 10 headers properly configured* - **[PASS]** Strict-Transport-Security is properly configured - **[PASS]** X-Content-Type-Options is properly configured - **[PASS]** X-Frame-Options is properly configured - **[WARNING]** Referrer-Policy has a weak value - **[PASS]** Permissions-Policy is set - **[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 - **[PASS]** Server header is present without version info ### Content Security Policy (A+ — 95/100) *8 of 10 CSP checks passed* - **[INFO]** Raw CSP policy - **[PASS]** default-src directive is set - **[PASS]** No 'unsafe-inline' in script source - **[PASS]** No 'unsafe-eval' in script source - **[PASS]** No wildcard in script source - **[PASS]** object-src falls back to default-src - **[PASS]** base-uri is properly restricted - **[PASS]** frame-ancestors directive is set - **[PASS]** form-action directive is set - **[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 282 days) - **[PASS]** Certificate chain has 2 certificates - **[PASS]** Certificate uses modern signature algorithm - **[PASS]** Certificate covers 4 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 (C — 60/100) *1 of 2 external resources have SRI* - **[WARNING]** External script from analytics.python.org lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[PASS]** script from media.ethicalads.io has SRI protection ### 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 — 85/100) *DMARC: quarantine* - **[PASS]** DMARC policy is quarantine — good protection ### Permissions-Policy (A+ — 100/100) *33 directives, 0 missing* - **[INFO]** publickey-credentials-create=(self) - **[INFO]** publickey-credentials-get=(self) - **[PASS]** accelerometer=() — blocked for all origins - **[PASS]** ambient-light-sensor=() — blocked for all origins - **[PASS]** autoplay=() — blocked for all origins - **[PASS]** battery=() — blocked for all origins - **[PASS]** camera=() — blocked for all origins - **[PASS]** display-capture=() — blocked for all origins - **[PASS]** document-domain=() — blocked for all origins - **[PASS]** encrypted-media=() — blocked for all origins - **[PASS]** execution-while-not-rendered=() — blocked for all origins - **[PASS]** execution-while-out-of-viewport=() — blocked for all origins - **[PASS]** fullscreen=() — blocked for all origins - **[PASS]** gamepad=() — blocked for all origins - **[PASS]** geolocation=() — blocked for all origins - **[PASS]** gyroscope=() — blocked for all origins - **[PASS]** hid=() — blocked for all origins - **[PASS]** identity-credentials-get=() — blocked for all origins - **[PASS]** idle-detection=() — blocked for all origins - **[PASS]** local-fonts=() — blocked for all origins - **[PASS]** magnetometer=() — blocked for all origins - **[PASS]** microphone=() — blocked for all origins - **[PASS]** midi=() — blocked for all origins - **[PASS]** otp-credentials=() — blocked for all origins - **[PASS]** payment=() — blocked for all origins - **[PASS]** picture-in-picture=() — blocked for all origins - **[PASS]** screen-wake-lock=() — blocked for all origins - **[PASS]** serial=() — blocked for all origins - **[PASS]** speaker-selection=() — blocked for all origins - **[PASS]** storage-access=() — blocked for all origins - **[PASS]** usb=() — blocked for all origins - **[PASS]** web-share=() — blocked for all origins - **[PASS]** xr-spatial-tracking=() — blocked for all origins ### CORS Configuration (B — 80/100) *No CORS headers* - **[PASS]** No CORS headers present — secure default --- ## Performance ### Page Weight Budget (A+ — 100/100) *521 KB transferred, 19 requests* - **[PASS]** Page weighs 547 KB (521 KB transferred) - **[PASS]** 19 HTTP requests - **[INFO]** Estimated 0.11 g CO2 per page load ### Third-Party Impact (A+ — 100/100) *2% third-party, 0 ms blocking* - **[INFO]** Third-party code accounts for 2% of page weight (11.7 KiB of 521.5 KiB) - **[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 (B — 80/100) *2 images, 0 KB saveable* - **[WARNING]** https://pypi.org/static/images/white-cube.2351a86c... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://pypi.org/static/images/logo-small.8998e9d1... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. ### JS Execution Cost (B — 80/100) *646ms total JS execution* - **[WARNING]** https://pypi.org/: 257ms CPU time - **[INFO]** Unattributable: 182ms CPU time - **[INFO]** https://pypi.org/static/js/warehouse.e9abdc3b.js: 134ms CPU time - **[INFO]** https://analytics.python.org/js/script.js: 73ms CPU time - **[INFO]** Third-party scripts: 255ms (40% of total) ### Font Loading (A+ — 100/100) *5 fonts (161 KB)* - **[INFO]** 5 font(s) use font-display: swap (FOUT risk but functional) ### JS Bundles (B — 80/100) *3 scripts, 66 KB unused* - **[WARNING]** https://pypi.org/static/js/warehouse.e9abdc3b.js: 66 KB unused (63%) — Consider code splitting or tree shaking to reduce unused code. - **[INFO]** Total unused JavaScript: 66 KB ### Resource Caching (A+ — 100/100) *All resources properly cached* - **[PASS]** No caching issues found ### Critical Rendering Path (A+ — 100/100) *No render-blocking resources* - **[PASS]** No render-blocking resources detected ### Resource Hints (A+ — 100/100) *No optimization needed* - **[PASS]** No resource hint issues ### Page Weight Inventory (A+ — 100/100) *19 resources · 521 KB · 66 KB savings available* - **[PASS]** Within 1MB page-weight target - **[INFO]** ~66 KB of savings available - **[INFO]** 4 third-party resources (2% of weight) ### Render-Blocking Resources (A+ — 100/100) *No render-blocking resources detected* - **[PASS]** No render-blocking resources detected in ### Third-Party Resources (A+ — 100/100) *No third-party resources detected* --- ## Content Quality ### Links (A+ — 100/100) *59 links checked, 59 healthy, 0 broken* - **[PASS]** 59 of 59 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:title — The og:title tag controls the title shown in social sharing 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 (A+ — 100/100) *4 A records, 31 ms lookup* - **[PASS]** Resolves to 4 IPv4 address(es) - **[PASS]** Has 4 IPv6 (AAAA) record(s) - **[PASS]** 4 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: 31 ms ### Redirect Chain (A+ — 100/100) *No redirects — direct access* - **[PASS]** No redirects — direct access ### IPv6 Readiness (A+ — 100/100) *IPv6 reachable (1 ms)* - **[PASS]** IPv6 is configured and reachable at 2a04:4e42:400::223, 2a04:4e42:200::223, 2a04:4e42:600::223, 2a04:4e42::223 ### Crawlability (A+ — 100/100) *robots.txt present, sitemap with 257 URLs* - **[PASS]** robots.txt is present - **[PASS]** sitemap.xml is present - **[PASS]** sitemap.xml is valid XML - **[PASS]** sitemap.xml contains 257 entries - **[PASS]** Sitemap index with 257 child sitemaps - **[PASS]** robots.txt references sitemap ### URL Variants (A+ — 100/100) *www/non-www, trailing slash, HTTP→HTTPS* - **[PASS]** www/non-www redirect configured correctly (preferred: non-www) - **[PASS]** HTTP correctly 301-redirects to HTTPS ### Domain Intelligence (A+ — 100/100) *pypi.org — via Gandi SAS, 10 years, 10 months old* - **[PASS]** Domain registered until Jul 24, 2032 (6 years, 4 months remaining) - **[PASS]** DNSSEC is enabled - **[PASS]** Registrar: Gandi SAS - **[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 (A+ — 100/100) *privacy policy found* - **[PASS]** Privacy policy link found - **[PASS]** Terms of service link found - **[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]** attribute is present - **[PASS]** value is valid - **[INFO]** No Content-Language HTTP header - **[INFO]** Language signals are inconsistent — The 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 (B — 80/100) *3 trackers detected* - **[INFO]** 3 third-party trackers detected — Found 2 analytics, 1 advertising, 0 marketing, 0 tag manager trackers. - **[WARNING]** 1 advertising/retargeting trackers detected — Advertising trackers collect user data for ad targeting. Under GDPR, these typically require explicit consent. ### Cookie & Tracker Inventory (A+ — 100/100) *0 cookies · 3 trackers · 0 pre-consent* - **[INFO]** 3 third-party tracker(s) detected on page --- ## Legal ### Legal Page Ecosystem (F — 35/100) *2 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. - **[PASS]** Terms of Service detected — Found at https://policies.python.org/pypi.org/Terms-of-Service/, linked from footer. - **[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://policies.python.org/pypi.org/Acceptable-Use-Policy/, linked from footer. ### Copyright Notice (A+ — 100/100) *© 2026 Python Software Foundation Site map Switch to desk* - **[PASS]** Copyright notice is up to date — Copyright notice is up to date: © 2026 Python Software Foundation Site map Switch to desk - **[PASS]** Copyright holder: Python Software Foundation Site map Switch to desk ### Regulatory Indicators *1 regulatory indicator(s) detected* - **[INFO]** This is a technical scan, not a legal assessment — BeaverCheck detects technical indicators that may suggest regulatory relevance. This is not a compliance audit and should not be relied upon for legal decisions. Consult qualified legal counsel for compliance assessments. - **[INFO]** GDPR indicators detected (moderate confidence) — Indicators suggesting GDPR may be relevant: Privacy policy page found. EU General Data Protection Regulation — governs collection and processing of personal data of EU residents. ### Third-Party Data Sharing *0 third-party service(s) detected* - **[INFO]** Data inventory for transparency purposes — This inventory identifies third-party services that receive data from your site visitors. Under regulations like GDPR (Article 30), maintaining records of data processing activities is commonly considered a best practice. This automated scan provides a starting point — it may not capture all data flows. - **[INFO]** No recognized third-party data-sharing services detected — This page does not appear to load external tracking, analytics, or advertising scripts. ### Compliance Badges (C — 55/100) *0 compliance badge(s) detected* - **[INFO]** No compliance badges detected — No recognized compliance certification badges or seals were found. This is common — many sites do not display compliance badges. --- ## Availability ### CDN & Delivery (A+ — 100/100) *Fastly (MISS, HIT, HIT)* - **[PASS]** Site is served via Fastly CDN - **[PASS]** CDN cache status: MISS, HIT, HIT ### HTTP Caching (F — 35/100) *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 ### 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, preload) - **[PASS]** HSTS preload enabled - **[PASS]** TLS 1.3 in use (fastest handshake, 1-RTT) --- ## Accessibility ### Landmark Structure (A+ — 100/100) *9 landmarks* - **[PASS]**
landmark present - **[PASS]** 6