Free SEO tools

Small, free tools for the checks site owners run most. No sign-up, nothing to install.

• SEO and AEO checker

  Scan any page free for SEO, answer engine (AEO) and AI search problems: title, description, headings, structured data and AI crawler access.

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• AI crawler checker

  Check if robots.txt or Cloudflare blocks GPTBot, ClaudeBot, PerplexityBot and 12 more AI crawlers from your site, with copy-paste fixes. Free.

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• llms.txt generator

  Generate an llms.txt file from your sitemap and main pages, then copy or download it. Free, no sign-up, with an honest look at whether llms.txt works.

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• llms.txt checker

  Check your llms.txt against the llmstxt.org format: H1 title, summary, H2 link sections and working links, with a clear pass, warn or fail for each.

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• Robots.txt tester

  Test a robots.txt: pick a crawler like Googlebot or GPTBot and a URL, and see if it is allowed or blocked and which rule decides, using Google's rules.

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• Schema checker

  Find the structured data on any page, flag invalid JSON-LD and missing required properties for Product, LocalBusiness, Article, breadcrumbs and more.

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• SERP snippet preview

  Preview your title and meta description as a Google result on desktop and mobile, with pixel-width estimates, character counts and tips to win the click.

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Every tool is free and needs no account. Checks that fetch your site are rate-limited per visitor and only read public pages.