TagSpion SEO, AI, Meta Inspector by TagSpion

SEO and AI analysis right in the sidebar: meta tags, Google and social preview, schema (JSON-LD), server, security and AI readiness. Flags issues and gives you ready-made fix code. Free, no account, no tracking.

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About this extension

TagSpion sits in the Firefox sidebar and checks every page you open, on every refresh, without a click.

What TagSpion shows:
- Meta tags: title, description, canonical, robots, hreflang, Open Graph, Twitter card
- Preview: how the page looks on Google (desktop and mobile), Facebook and X
- Schema (JSON-LD): required and recommended fields, rich result preview
- Schema lab: edit, check and fix JSON-LD live
- AI readiness with grade A-F: may and can ChatGPT, Claude, Perplexity and Google AI read the page? robots.txt, text without JavaScript, facts, freshness, author, citability
- Technical: status, redirects, response time, compression, HTTP version, security headers with grade
- Sitemap check: all URLs at once, export as CSV
- Fix code: missing tags, JSON-LD, robots.txt or Apache headers ready to copy

Privacy:
TagSpion has no backend and collects no data. Everything is analysed locally in your browser. External lookups (DNS, certificate, your IP) only happen after you click and confirm in a notice dialog.

Free, no account, no ads. Available in 9 languages: English, German, Spanish, Portuguese (Brazil), French, Turkish, Italian, Dutch and Polish.

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TagSpion SEO, AI, Meta Inspector by TagSpion

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