Technical SEO tools,
free forever.
Three of MetricVault's strongest technical tools, unlocked for anyone. No signup, no credit card, no usage caps. Validate, check, and audit straight from your browser.
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 MetricVault account — you'll get the AI Visibility tracker, Domain Overview, Keyword Magic, and 25+ more tools at no cost.