Free tools
Free SEO tools
Single-purpose utilities for inspecting any public URL. Built on the same scraper our full audit uses.
Run full audit insteadMeta Tag Checker
Title, meta description, H1, OG, Twitter Card, schema, hreflang and robots meta — all the on-page tags Google and social platforms read.
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Robots.txt Validator
Fetch and validate /robots.txt. Catches the classic 'Disallow: /' mistake and counts directives, sitemap declarations and more.
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Sitemap Inspector
Validate XML sitemaps. Counts URLs, samples 10, flags missing lastmod dates and oversized files (>50,000 URLs).
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The full audit covers all of these — and 30+ more checks
Every tool here runs as part of the Flatline audit. Get a single Visibility Score 0-100 with a categorised fix list.