Free website tools
Check an SSL certificate, a domain's expiry date or a robots.txt rule in seconds. Free, no sign-up, 3 checks a day per tool.
Free SSL checker
Check any website's SSL certificate in seconds: validity, expiry date, days left, issuer and the domains it covers. Free, with no sign-up.
Free domain expiry checker
Check any domain's expiry date, days left, registrar and status codes, taken straight from the registry's RDAP record. Free, with no sign-up.
Free robots.txt tester
Enter a page URL, pick a crawler and see whether robots.txt allows or blocks it, plus the exact line that decides. Free, with no sign-up.