llms.txt Generator & Validator
Generate and validate spec-compliant llms.txt & llms-full.txt files for AI agents.
Instant on-page SEO analysis: audit meta tags, headings, canonicals & site health.
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Analyze any webpage in seconds with our free SEO checker. Get an actionable 0–100 SEO health score covering metadata, heading hierarchy, crawl directives, and keyword usage.
🔒 This tool runs entirely in your browser. Nothing is uploaded or stored.

Background reading: Seo Checker on Wikipedia. More: all seo tools.
Open the Free SEO Checker: Website Audit & Optimization Tool and use the controls in the workspace below: instant on-page seo analysis: audit meta tags, headings, canonicals & site health. Results appear instantly in your browser, with nothing to install, sign up for, or pay for.
Yes. The Free SEO Checker: Website Audit & Optimization Tool is completely free, like every tool in the PrimeFreeTools library. There are no accounts, subscriptions, or usage limits.
No. The Free SEO Checker: Website Audit & Optimization Tool runs with JavaScript in your browser, so what you enter never leaves your device and nothing is stored on a server.
Analyze any webpage in seconds with our free SEO checker. Get an actionable 0–100 SEO health score covering metadata, heading hierarchy, crawl directives, and keyword usage. You will find it grouped under SEO Tools together with 8 other free tools on the PrimeFreeTools homepage.
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