Free SEO tools and
AI visibility checkers
These free SEO tools work on any domain, including one you do not own. They are free tools for SEO and for AI search, not trial versions. Twelve of Metric Vault's strongest SEO and AI-search tools, unlocked for anyone. No signup, no credit card, no usage caps. Validate, check, and audit straight from your browser.
AI Search Visibility Checker
See if ChatGPT, Perplexity, Gemini and Google AI Overviews can read, understand and cite your site. Get a 0-100 readiness score and prioritized fixes.
Open the checker →GEO Audit
Score how citable your page is for ChatGPT, Perplexity and Gemini with a 0-100 GEO score, and get the exact fixes to get quoted in AI answers.
Run the audit →Google AI Overview Checker
See whether your page is eligible to appear in Google’s AI Overview answer box at the top of search, with a readiness score and prioritized fixes.
Check eligibility →AI Citation Audit
See whether ChatGPT, Perplexity, Gemini and Claude will cite your page as a source, with a 0-100 score and the exact fixes to earn the citation.
Run the audit →SEO Competitor Analysis
Compare your site against any competitor head-to-head on structured data, content depth, headings, AI readiness and more. See who wins on each signal.
Open the analyzer →llms.txt Generator
Enter your domain and get a ready-to-use llms.txt that guides ChatGPT, Perplexity and other AI crawlers to your key pages.
Open the generator →llms.txt Validator
Paste a URL or a file and check an llms.txt against the spec, so the file you published actually parses for the crawlers it was written for.
Open the validator →XML Sitemap Validator
Find your sitemap, confirm the XML is valid, count URLs, and catch the issues that stop crawlers from discovering pages.
Open the validator →On-Page SEO Checker
Audit any URL: title, meta, headings, canonical, Open Graph, image alt text, structured data and links, with a score and a plain-English explanation of each.
Open the checker →Schema Markup Validator
Test JSON-LD, Microdata, and RDFa structured data on any URL. See every schema type Google detects, and any errors that might block rich snippets.
Open the validator →Robots.txt Checker
Catch the misconfigurations that block Googlebot. Test Disallow rules, verify sitemap entries, and confirm your crawl directives actually work.
Open the checker →PageSpeed & Core Web Vitals Audit
Real Lighthouse audit on any URL. Performance, Accessibility, SEO, and Best Practices scores plus the full Core Web Vitals breakdown (LCP, INP, CLS).
Open the audit →Need more? Start a free Metric Vault account, and you'll get the AI Visibility tracker, Domain Overview, Keyword Magic, and 10+ more free tools at no cost.