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Analyze SEO issues in real-time and get ready-to-paste code fixes. SEO DevFix analyzes any web page and gives you ready-to-paste code fixes for every SEO issue detected. No guessing — just copy the fix and paste it in your editor. 200+ SEO checks including: TECHNICAL SEO ✓ HTTPS, canonical URL, viewport, lang attribute ✓ noindex / nofollow detection ✓ Meta refresh redirects ✓ Multiple canonical / title tags ✓ hreflang, AMP link, PWA manifest META TAGS ✓ Title: missing, too short, too long ✓ Meta description issues ✓ Open Graph (og:title, og:image, og:url) ✓ Twitter Cards CORE WEB VITALS (measured live) ✓ LCP — Largest Contentful Paint ✓ CLS — Cumulative Layout Shift ✓ FCP — First Contentful Paint ✓ TTFB — Time to First Byte CONTENT QUALITY ✓ Thin content, keyword stuffing ✓ Lorem ipsum / placeholder text ✓ Missing author, date, reading time ✓ Ad density detection IMAGES ✓ Missing alt text, broken images ✓ Old formats (JPEG/PNG vs WebP) ✓ Missing srcset, dimensions, lazy loading LINKS ✓ Generic anchor text ✓ Missing noopener, nofollow issues ✓ Affiliate links without rel=sponsored ✓ Broken anchor links STRUCTURED DATA ✓ Article, FAQ, BreadcrumbList schemas ✓ Organization, Product, VideoObject ✓ Invalid JSON-LD detection MOBILE SEO ✓ Viewport overflow ✓ Tap targets too small ✓ Intrusive popups detection ✓ Font size issues E-E-A-T SIGNALS ✓ Missing About / Contact / Privacy pages ✓ No author bio, no social links ✓ Cookie consent (GDPR) PERFORMANCE ✓ Render-blocking scripts ✓ DOM size, too many external scripts ✓ Google Fonts optimization ✓ Missing preconnect / dns-prefetch 100% private. All analysis runs locally in your browser. No data sent anywhere. No account required.
Mar 13, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.