Tools
Technical SEO checks
Each check runs as a web form here, as a REST endpoint and as an MCP tool. All three return the same result: status, summary, findings and data.
Redirect matrix
Tests all protocol, host and path variants and reports every redirect hop with its status code.
~6 s · up to 120 requests
redirect_matrixRun toolHeader inspector
Compares status codes, raw HTTP headers and HTML head signals for several user agents.
~4 s · up to 60 requests
header_inspectorRun toolrobots.txt analyzer
Parses robots.txt like Google (RFC 9309) and evaluates the URL for search engines and AI crawlers.
~4 s · up to 40 requests
robots_analyzerRun toolSitemap audit
Loads all XML sitemaps, takes inventory and checks a sample of URLs for status, noindex, blocking and canonicals.
~25 s · up to 400 requests
sitemap_auditRun toolhreflang validator
Builds the hreflang graph and checks return links, language codes, status, canonical and noindex on targets.
~8 s · up to 150 requests
hreflang_validatorRun toolBot verifier
Checks whether an IP really belongs to the crawler its user agent claims, using published ranges and reverse DNS.
~8 s · up to 0 requests
bot_verifierRun toolRender diff
Compares raw HTML with the page rendered in headless Chromium and reports which SEO signals depend on JavaScript.
~18 s · up to 12 requests
render_diffRun tool