Analyze SEO issues in real-time and get ready-to-paste code fixes.
Users
5
−1 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
1
0 in 30 days
Store rank
#246K
#206K among extensions
Version
1.0.0
updated 13 Mar 2026
Users
monthly, 7 months
Latest, 16 Oct 2026:5 usersMove the mouse over the chart for any month
Ratings count
monthly, 7 months
Latest, 16 Oct 2026:1 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About SEO DevFix
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.