Free website checkers
Each tool runs one check from the QA Spider audit on the address you type and answers in plain words: pass, fail, or not checked when we could not tell. No sign-up, and nothing is stored.
AI crawler checker
Type your site. We read its robots.txt the way each AI crawler does and tell you which ones are turned away, then look for Organization markup on the homepage that says who you are.
DMARC & SPF checker
Type your domain. We look up its DMARC and SPF records in public DNS and say, in plain words, whether receiving mail servers are told to reject mail forged in your name.
Security headers checker
Type a page address. We request it once, the way a browser does, and read the response headers and the cookies it sets before you click anything.
Robots.txt & sitemap checker
Type your site. We read robots.txt, find your sitemap (from robots.txt or the usual locations), and check what a search engine would get from both.
Structured data checker
Type a page address. We ask the public Schema.org validator to read it and report the types it found and any errors in the markup.
SERP snippet preview
Type a page address. We read its title and meta description and show roughly how a search result would print them, with the part that would be cut off.
llms.txt checker
Type your site. We fetch /llms.txt and check it against the proposed llms.txt format. We do not score you for it, and here is why.
Want every check at once?
The free audit runs all of these and more, across your pages, with a fix prompt for each finding.
Audit my site