Free website checks
No signup. Each one uses only the public requests any browser makes, and when we can't tell, we say we can't tell.
- Website health checkEverything below, in one report.
- SSL certificate checkerWhen it expires, and whether browsers trust it.
- Security headers checkerWhich protective headers your site sends.
- Website uptime checkerDoes it answer right now, and how fast.
- Domain expiry checkerWhen the registration runs out.
Not built yet
A DNS health check (SPF, DMARC, nameservers). Monitoring already looks at these for watched sites, but there's no free public version, so I'm not listing it as one.
Only check sites you own or look after. These checks aren't a penetration test or a malware scan.