# BeaverCheck Audit Report — https://51.la **Date:** April 21, 2026 **URL:** https://51.la **Overall Grade:** C (70/100) **Report:** https://beavercheck.com/results/be6ac4a7-7181-4dcc-b410-b17205159294 ## Top Findings 1. **[CRITICAL]** Content-Security-Policy header is missing — Security > Security Headers 2. **[CRITICAL]** HSTS header is missing — Security > Security Headers 3. **[CRITICAL]** No Content-Security-Policy header found — Security > Content Security Policy 4. **[CRITICAL]** Page weighs 9.8 MB (8.7 MB transferred) — Performance > Page Weight Budget 5. **[CRITICAL]** 2 link(s) with no accessible text — Accessibility > Link & Button Quality --- ## Lighthouse Scores | Category | Score | |----------|-------| | Performance | 47 | | Accessibility | 84 | | Best Practices | 92 | | SEO | 75 | --- ## Security ### Security Headers (F — 5/100) *1 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'. - **[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 - **[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 (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 177 days) - **[PASS]** Certificate chain has 5 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* - **[PASS]** security.txt is present — good practice - **[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) *8.7 MB transferred, 85 requests* - **[CRITICAL]** Page weighs 9.8 MB (8.7 MB transferred) - **[WARNING]** Images are 8.1 MB — compress or use modern formats — Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size. - **[INFO]** 85 HTTP requests - **[INFO]** Estimated 1.8 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 (214.4 KiB of 8.7 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 (C — 60/100) *73 images, 0 KB saveable* - **[WARNING]** https://51.la/png/v6-icon-DU6mPp9-.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/site/site_001.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/evaluate-name-3.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/site/site_004.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/site/site_014.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/evaluate-name-2.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/evaluate-icon-3.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/site/site_009.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/site/site_017.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/site/site_016.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/evaluate-name-1.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/site/site_011.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/evaluate-icon-1.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/site/site_010.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/site/site_012.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/site/site_015.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/site/site_005.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/site/site_013.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/site/site_003.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/site/site_007.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/site/site_008.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/evaluate-icon-2.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/site/site_002.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/site/site_018.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/image/site/site_006.gif is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://51.la/png/anquan_logo-DsWQFSvr.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. ### JS Execution Cost (F — 20/100) *4141ms total JS execution* - **[WARNING]** https://51.la/js/index-8kzxuVEg.js: 1975ms CPU time - **[WARNING]** https://51.la/: 1155ms CPU time - **[WARNING]** Unattributable: 1010ms CPU time - **[INFO]** Third-party scripts: 1010ms (24% of total) ### Font Loading (A+ — 100/100) *1 fonts (4 KB)* - **[INFO]** 1 font(s) use font-display: swap (FOUT risk but functional) ### JS Bundles (C — 60/100) *2 scripts, 281 KB unused* - **[WARNING]** https://51.la/js/index-8kzxuVEg.js: 281 KB unused (73%) — Consider code splitting or tree shaking to reduce unused code. - **[INFO]** Total unused JavaScript: 281 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 (C — 55/100) *85 resources · 8.7 MB · 281 KB savings available* - **[WARNING]** Page weight 7.7 MB over 1MB target - **[INFO]** ~281 KB of savings available - **[INFO]** 8 third-party resources (2% of weight) - **[INFO]** 19 resources over 200KB ### 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 — 90/100) *66 links checked, 64 healthy, 2 broken* - **[WARNING]** 64 of 66 links are healthy - **[CRITICAL]** Broken link: http://www.beian.gov.cn/portal/registerSystemInfo?recordc... — Found in . Get "http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=44010602004893": blocked: www.beian.gov.cn resolves to private/reserved IP 127.0.0.1 - **[CRITICAL]** Broken link: https://beian.miit.gov.cn/ — Found in . Returns HTTP 521. ### 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 — 85/100) *1 A records, 151 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 - **[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. - **[PASS]** 2 nameserver(s) configured - **[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. - **[PASS]** SPF record present in TXT - **[PASS]** DNS resolution time: 151 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 (C — 65/100) *robots.txt present, sitemap with 0 URLs* - **[PASS]** robots.txt is present - **[PASS]** sitemap.xml is present - **[WARNING]** sitemap.xml contains invalid XML — Search engines may not be able to parse the sitemap. Fix XML validation errors. - **[WARNING]** sitemap.xml is empty — no URLs found — An empty sitemap provides no value. Add entries for your pages. - **[INFO]** robots.txt does not reference a sitemap — Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap. ### URL Variants (D — 50/100) *www/non-www, trailing slash, HTTP→HTTPS* - **[CRITICAL]** Both www and non-www versions serve content - **[CRITICAL]** HTTP version does not redirect to HTTPS ### Domain Intelligence (A+ — 100/100) *51.la — via Key-Systems GmbH, 21 years, 6 months old, hosted on ACE-AS-AP ACE, SG* - **[PASS]** Domain registered until Jan 17, 2028 (1 years, 9 months remaining) - **[PASS]** Registrar: Key-Systems GmbH - **[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: ACE-AS-AP ACE, SG --- ## 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 (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 (A+ — 100/100) *© 2002-2026 广州有啦网络科技有限公司 ｜ 粤ICP…* - **[PASS]** Copyright notice is up to date — Copyright notice is up to date: © 2002-2026 广州有啦网络科技有限公司 ｜ 粤ICP备17055553号 增值电信许可证 粤B2-20210550 - **[PASS]** Copyright holder: 广州有啦网络科技有限公司 ｜ 粤ICP备17055553号 增值电信许可证 粤B2-20210550 ### 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 (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 (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 (B — 70/100) *3 landmarks* - **[PASS]**
landmark present - **[WARNING]** No