iSEO

On-page SEO & indexability linter. Paste a URL — it fetches the page and runs ~25 checks. No login, nothing stored.

Checks title/meta, canonical & noindex, headings, image alt, Open Graph, JSON-LD, robots.txt/sitemap, hreflang, HTTPS/viewport and more.

Checks are based on published standards. Also available as /check/example.com or /check?url=…&format=json (raw JSON).
New: 🤖 RobotsReader — visualize any site's robots.txt.

📝 Notes to help your site · all notes →

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