Draft under editorial review. This page is not yet publication-ready and is excluded from search engines.
No free tool exists yet. This placeholder stays out of search until the first tool works.
Free SEO tools (planned)
Small, free utilities that run entirely in your browser: nothing uploaded, nothing stored, no sign-up. None is available yet. These are the first ones planned.
Planned tools
robots.txt AI crawler tester
Paste a robots.txt file and see which documented AI and search crawlers may fetch a URL, using RFC 9309 precedence, with the deciding line highlighted.
Planned · not availablehreflang code checker
Check language-region codes such as en-GB or es-419 and get the usual mistakes (en_US, en-UK) explained.
Planned · not availableJSON-LD syntax checker
Find the exact character where a JSON-LD block breaks, before search engines discard the whole block.
Planned · not availableSee the real dashboard before you ask for access
The interactive demo runs the actual SEO Sentinel interface on a fictional agency and fictional client websites. No sign-up, nothing to install.
SEO Sentinel is in private beta. Nothing is for sale yet and no card is ever requested.