Browser-local tools
Inspect evidence already in your possession. The current tools run locally in your browser and do not issue arbitrary network requests.
Every result remains available without signup. Observations, inferences, unknowns, and input limits are shown on the tool surface.
Log File Inspector
Parse a bounded Apache or Nginx access-log sample. Review accepted rows, status families, request paths, and declared user agents.
Response Inspector
Paste raw HTTP response headers and HTML. Separate observed status, redirect, canonical, robots, and unknown fields.
Redirect Chain Builder
Assemble pasted response hops, resolve relative Location fields, detect gaps or loops, and copy a structured evidence object.
Robots.txt Rule Tester
Test one crawler product token and URL against RFC 9309 group selection, longest-match, Allow, Disallow, wildcard, and end-anchor rules.
IP Address Check
Classify IPv4 or IPv6 syntax and selected reserved ranges without claiming identity or precise location.