# BeaverCheck Audit Report — https://arxiv.org **Date:** April 16, 2026 **URL:** https://arxiv.org **Overall Grade:** B (83/100) **Report:** https://beavercheck.com/results/9efb044b-cdcf-4e61-9fc5-d0f8866d41b6 ## Top Findings 1. **[CRITICAL]** HSTS header is missing — Security > Security Headers 2. **[CRITICAL]** 1 link(s) with no accessible text — Accessibility > Link & Button Quality 3. **[CRITICAL]** 3 control(s) without accessible label — Accessibility > Form Accessibility 4. **[WARNING]** Certificate expires soon (21 days remaining) — Security > TLS & Certificates 5. **[WARNING]** Cross-Origin-Embedder-Policy header is missing — Security > Security Headers --- ## Lighthouse Scores | Category | Score | |----------|-------| | Performance | 100 | | Accessibility | 96 | | Best Practices | 100 | | SEO | 92 | --- ## Security ### Security Headers (F — 35/100) *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. - **[WARNING]** X-Content-Type-Options header is missing — This header prevents MIME-type sniffing, which can lead to XSS attacks. Set it to 'nosniff'. - **[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 - **[PASS]** Server header is present without version info ### Content Security Policy (B — 70/100) *2 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. - **[INFO]** No script-src or default-src to check for 'unsafe-inline' - **[INFO]** No script-src or default-src to check for 'unsafe-eval' - **[INFO]** No script-src or default-src to check for wildcard - **[PASS]** object-src falls back to default-src - **[WARNING]** base-uri directive is missing — Without base-uri, attackers can inject a tag to hijack relative URLs. Set it to 'self' or 'none'. - **[PASS]** frame-ancestors directive is set - **[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 — 90/100) *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 21 days) - **[WARNING]** Certificate expires soon (21 days remaining) — Renew the certificate before it expires to avoid browser warnings. - **[PASS]** Certificate chain has 2 certificates - **[PASS]** Certificate uses modern signature algorithm - **[PASS]** Certificate covers 2 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 (D — 50/100) *DMARC: none* - **[WARNING]** DMARC policy is none — monitoring only — This only monitors, it doesn't block spoofed emails. Change to p=quarantine or p=reject. ### 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 (A+ — 100/100) *145 KB transferred, 14 requests* - **[PASS]** Page weighs 141 KB (145 KB transferred) - **[PASS]** 14 HTTP requests - **[INFO]** Estimated 0.03 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 (B — 70/100) *4 images, 0 KB saveable* - **[WARNING]** https://arxiv.org/static/browse/0.3.4/images/arxiv... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://arxiv.org/static/browse/0.3.4/images/icons... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. ### JS Execution Cost (A+ — 100/100) *227ms total JS execution* - **[INFO]** Unattributable: 130ms CPU time - **[INFO]** https://arxiv.org/: 97ms CPU time - **[WARNING]** Third-party scripts: 130ms (57% of total) ### Font Loading (A+ — 100/100) *No web fonts (system fonts)* - **[PASS]** No web fonts loaded — system fonts are fastest ### JS Bundles (A+ — 100/100) *3 scripts, 0 KB unused* ### 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) *14 resources · 145 KB · 0 KB savings available* - **[PASS]** Within 1MB page-weight target ### 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 (F — 40/100) *200 links checked, 182 healthy, 18 broken* - **[CRITICAL]** 182 of 200 links are healthy - **[CRITICAL]** Broken link: https://arxiv.org/IgnoreMe — Found in . Returns HTTP 500. - **[CRITICAL]** Broken link: https://arxiv.org/search/advanced — Found in . Get "https://arxiv.org/search/advanced": context deadline exceeded - **[CRITICAL]** Broken link: https://arxiv.org/search/astro-ph — Found in . Get "https://arxiv.org/search/astro-ph": context deadline exceeded - **[CRITICAL]** Broken link: https://arxiv.org/search/cond-mat — Found in . Get "https://arxiv.org/search/cond-mat": context deadline exceeded - **[CRITICAL]** Broken link: https://arxiv.org/search/gr-qc — Found in . Get "https://arxiv.org/search/gr-qc": context deadline exceeded - **[CRITICAL]** Broken link: https://arxiv.org/search/hep-ex — Found in . Get "https://arxiv.org/search/hep-ex": context deadline exceeded - **[CRITICAL]** Broken link: https://arxiv.org/search/hep-lat — Found in . Get "https://arxiv.org/search/hep-lat": context deadline exceeded - **[CRITICAL]** Broken link: https://arxiv.org/search/hep-ph — Found in . Get "https://arxiv.org/search/hep-ph": context deadline exceeded - **[CRITICAL]** Broken link: https://arxiv.org/search/hep-th — Found in . Get "https://arxiv.org/search/hep-th": context deadline exceeded - **[CRITICAL]** Broken link: https://arxiv.org/search/math-ph — Found in . Get "https://arxiv.org/search/math-ph": context deadline exceeded - **[CRITICAL]** Broken link: https://arxiv.org/search/nlin — Found in . Get "https://arxiv.org/search/nlin": context deadline exceeded - **[CRITICAL]** Broken link: https://arxiv.org/search/nucl-ex — Found in . Get "https://arxiv.org/search/nucl-ex": context deadline exceeded - **[CRITICAL]** Broken link: https://arxiv.org/search/nucl-th — Found in . Get "https://arxiv.org/search/nucl-th": context deadline exceeded - **[CRITICAL]** Broken link: https://arxiv.org/search/physics — Found in . Get "https://arxiv.org/search/physics": context deadline exceeded - **[CRITICAL]** Broken link: https://arxiv.org/list/physics.chem-ph/recent — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://arxiv.org/list/physics.geo-ph/recent — Found in . Get "https://arxiv.org/list/physics.geo-ph/recent": context deadline exceeded - **[CRITICAL]** Broken link: https://arxiv.org/search/quant-ph — Found in . Get "https://arxiv.org/search/quant-ph": context deadline exceeded - **[CRITICAL]** Broken link: https://arxiv.org/search/math — Found in . Get "https://arxiv.org/search/math": context deadline exceeded ### 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+ — 100/100) *4 A records, 24 ms lookup* - **[PASS]** Resolves to 4 IPv4 address(es) - **[INFO]** No IPv6 (AAAA) records - **[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: 24 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 — 80/100) *robots.txt present, no sitemap* - **[PASS]** robots.txt is present - **[INFO]** No sitemap.xml found — A sitemap helps search engines discover and index your pages more efficiently. - **[INFO]** robots.txt does not reference a sitemap — Add a 'Sitemap:' directive to robots.txt so search engines can discover your 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) *arxiv.org — via Network Solutions, LLC, 27 years, 8 months old, hosted on Fastly* - **[PASS]** Domain registered until Dec 28, 2029 (3 years, 9 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: Network Solutions, LLC - **[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. - **[PASS]** Hosting: Fastly --- ## 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]** 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 (A+ — 100/100) *No third-party trackers detected* - **[PASS]** No third-party trackers detected --- ## Legal ### Legal Page Ecosystem (D — 40/100) *2 of 7 expected legal pages detected* - **[PASS]** Privacy Policy detected — Found at https://info.arxiv.org/help/policies/privacy_policy.html, linked from footer. - **[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. - **[PASS]** DMCA / Copyright Notice detected — Found at https://info.arxiv.org/help/license/index.html, linked from footer. - **[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 *2 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 (strong confidence) — Indicators suggesting GDPR may be relevant: European TLD detected: .si; Privacy policy page found. EU General Data Protection Regulation — governs collection and processing of personal data of EU residents. - **[INFO]** HIPAA indicators detected (weak confidence) — Indicators suggesting HIPAA may be relevant: Text mentions: phi. Health Insurance Portability and Accountability Act — protects sensitive patient health information. ### 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 — 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 (B — 75/100) *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. - **[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 (A+ — 100/100) *5 landmarks* - **[PASS]**
landmark present - **[PASS]** 2