AI-powered technical SEO audit in Chrome DevTools. Analyze meta tags, social cards, schema, headings, links, images & get AI tips.
Users
4
0 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
2
0 in 30 days
Store rank
#263K
#219K among extensions
Version
2.0.0
updated 16 Feb 2026
Users
monthly, 8 months
Latest, 16 Oct 2026:4 usersMove the mouse over the chart for any month
Ratings count
monthly, 8 months
Latest, 16 Oct 2026:2 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 teraSEO
teraSEO — Pro Technical SEO Analyzer
Instantly audit any web page's SEO health right inside Chrome DevTools. teraSEO gives you a complete 9-tab analysis dashboard covering every critical SEO factor — from meta tags and Open Graph cards to structured data, image optimization, and AI-powered recommendations.
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WHY teraSEO?
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✦ AI-powered insights — Get specific, actionable SEO recommendations from AI
✦ Real-time analysis — Results appear instantly as you browse
✦ Privacy-first — Static analysis is 100% on-device, AI analysis is opt-in only
✦ Zero configuration — Just open DevTools and start auditing
✦ SEO scoring — A through F grades across 5 categories
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WHAT YOU GET
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▸ Overview — Overall SEO score with category breakdown (Meta, Technical, Content, Social, Schema) and visual score ring
▸ Meta Tags — Complete meta tag inspection with key/value table, validation warnings, character
counts, and SERP preview
▸ Headings — Full heading hierarchy (H1-H6) analysis with structure validation, nesting checks, and content review
▸ Technical — Canonical URLs, robots directives, viewport settings, language declarations, HTTP-equiv headers, and hreflang tags
▸ Social — Open Graph and Twitter Card preview with property validation, image dimensions, and share-ready card mockups
▸ Schema — JSON-LD structured data viewer with collapsible tree, schema type detection, and
validation
▸ Links — Internal/external link audit with nofollow detection, anchor text analysis, and broken link indicators
▸ Images — Image inventory with alt text coverage, dimension checks, format analysis, and optimization suggestions
▸ AI Analysis — AI-powered SEO
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SEO SCORING SYSTEM
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Your page receives a weighted score across 5 categories:
• Meta (30%) — Title, description, keywords
• Technical (25%) — Canonical, robots, viewport
• Content (20%) — Headings structure, text quality
• Social (15%) — OG tags, Twitter cards
• Schema (10%) — Structured data presence
Grades: A (90+), B (80+), C (70+), D (60+), F (<60)
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PRIVACY FIRST
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Static SEO analysis runs 100% locally in your browser.
The optional AI Analysis feature sends only page metadata (URL, title, heading counts) to Groq's API when you click "Analyze with AI" — never automatically. Your API key is stored locally and
never shared with teraSEO.
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HOW TO USE
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1. Install teraSEO from the Chrome Web Store
2. Open Chrome DevTools (F12 or Ctrl+Shift+I)
3. Navigate to the "teraSEO" panel tab
4. Browse any web page — analysis starts automatically
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100% FREE
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Every feature is completely free. No paywalls, no trials, no accounts required. All 9 analysis tabs,
JSON export, AI analysis, and full scoring — free forever. AI Analysis requires a free Groq API key (get one at console.groq.com).
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Perfect for SEO professionals, web developers, content creators, and digital marketers who need fast, reliable SEO insights without leaving the browser.