Free tools for website owners
Quick checks for the things that break quietly: analytics, DNS, certificates, security headers and redirects. No signup, no limits for normal use.
- Analytics detectorSee which analytics, tag managers and tracking pixels any website uses.
- DNS lookupRead the DNS records of a domain and check its SPF and DMARC email protection.
- SSL certificate checkerCheck whether browsers trust a certificate, the names it covers and when it expires.
- Security headers checkerGrade a site’s HTTP security headers from A to F and check its cookie flags.
- Redirect checkerFollow http, https, www and bare versions of a domain and every redirect on the way.