Technical SEO Audit for mozilla.org
93
/ 100
Excellent
TL;DR
Free technical SEO audit for mozilla.org. Score: 93/100 across 60+ on-page, performance, mobile, and security signals. Run by Baaed FREE SEO Suite.
Audit Results
Analytics 3 signals
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Google Analytics No Google Analytics detected. Without analytics you can't measure traffic or conversions.
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Google Tag Manager GTM container detected — central management of tracking tags.
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Facebook Pixel No Facebook Pixel detected. Optional — only worth adding if you run Meta ads and need retargeting.
Mobile 2 signals
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Mobile Viewport Mobile viewport correctly configured.
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Flash Content No Flash content — good, Flash has been discontinued since 2020.
Onpage 18 signals
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Title Tag Title present, 48 characters. Good: "Internet for people, not profit — Mozilla Global"
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Meta Description Description present, 134 characters — within the sweet spot.
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Meta Keywords No meta keywords tag present — this is modern best practice. Google ignores this tag since 2009.
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H1 Heading Exactly one H1 on the page: "Choose your language or locale to browse Mozilla.org"
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Heading Hierarchy Logical heading structure: H1:1 H2:25 H3:0 H4:0 H5:0 H6:0.
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Image Alt Text All 12 images have alt text. Excellent for accessibility and SEO.
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Internal vs External Links 101 internal, 33 external. Internal link ratio is healthy (75%).
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Follow / Nofollow 134 dofollow, 0 nofollow. Link equity flows through dofollow links to linked pages.
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Canonical URL No <link rel="canonical"> tag. Helps prevent duplicate content issues. Rewrite URLs with our tool →
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Language Attribute Page declares lang="en".
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Character Encoding UTF-8 charset declared — correct modern default.
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DOCTYPE HTML5 DOCTYPE declared correctly.
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Custom 404 Page Missing URLs return a full 404 response (9,196 bytes). Visitors get proper feedback.
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W3C HTML Validity 2 W3C HTML error(s). Minor — fix for clean markup.
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Text to HTML Ratio Text/HTML ratio: 5.5%. Very low — page is mostly markup. Search engines prefer content-rich pages.
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Total Link Count 134 links on page.
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Author Meta No author meta tag. Optional — relevant for blogs and news sites.
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Readability Proxy Average sentence length ~29 words. Break up long sentences for readability and mobile scanning.
Performance 12 signals
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HTTP Status Server returned HTTP 200.
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Response Time Fast TTFB: 100ms. Well under Google's 800ms target.
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Page Size Page weight: 8 KB. Lightweight — good for mobile users on slow connections.
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Compression Brotli compression active — modern and efficient.
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Browser Caching Static asset https://www.mozilla.org/media/img/favicons/mozilla/apple-touch-icon.05aa000f6748.png caches well: max-age=315360000, public, immutable.
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HTTP Version Serving over HTTP/2 — multiplexed and modern.
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External Resources 12 external files. Consider bundling CSS/JS to reduce request count.
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Inline <style> Tags No inline style blocks — clean separation of concerns.
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Inline <script> Tags No inline scripts — excellent for CSP and caching.
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Iframes No iframes — keeps load time predictable.
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Image Count 12 images.
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Broken Link Check Crawled 1 internal links — all returned a 2xx/3xx response. Run full broken-links scan →
Security 9 signals
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HTTPS Page served over HTTPS. Good for SEO, privacy, and user trust.
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HSTS Strict-Transport-Security header present. Forces HTTPS on future visits.
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Content Security Policy Content-Security-Policy header present. Protects against XSS.
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X-Frame-Options / CSP frame-ancestors Clickjacking protection is in place.
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Mixed Content No mixed content — all resources loaded over HTTPS.
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Server Header Disclosure Server header present but version hidden: "granian".
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X-Powered-By Disclosure No X-Powered-By header — good.
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security.txt security.txt file present — RFC 9116 standard for security contact info.
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DNSBL / Spam Blocklist IP is clean on the 5 major DNSBL zones spot-checked (Spamhaus, SpamCop, Barracuda, SORBS, PSBL).
Technical 16 signals
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Viewport Meta Tag Responsive viewport declared: width=device-width, initial-scale=1.
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Robots Meta Tag No restrictive robots meta — default is index,follow (good).
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robots.txt robots.txt is present at https://mozilla.org/robots.txt.
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XML Sitemap No sitemap found at standard locations (/sitemap.xml, /sitemap_index.xml) or declared in robots.txt. Generate and submit one to Google Search Console. Generate XML Sitemap →
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Structured Data (Schema) Structured data present — RDFa detected. Eligible for rich results.
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Structured Data Richness No schema types detected.
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Open Graph Tags All core Open Graph tags present (title, description, image, url, type).
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Twitter Card Twitter Card configured: type "summary".
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AMP Page is not AMP. This is fine — AMP is optional and declining in Google's ranking signals.
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Favicon Favicon declared: https://www.mozilla.org/media/img/favicons/mozilla/apple-touch-icon.05aa000f6748.png.
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Hreflang 79 hreflang alternates declared.
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ads.txt No ads.txt file. This is optional — add one only if you monetize via programmatic display ads.
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Server IP / Location Resolved to 35.190.14.201.
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Server Location / Host Hosting provider: <strong>Google Cloud</strong> (rDNS: <code>201.14.190.35.bc.googleusercontent.com</code>).
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www / non-www canonical Apex redirects to www. Single canonical hostname configured correctly.
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Domain Age WHOIS lookup unavailable for this TLD — skipped. Older domains tend to rank slightly better; not an actionable issue.
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