CertAvert - Use Free SSL/TLS tools and certificate expiry alerts
by•
Most SSL monitors only count down to expiry. CertAvert watches what actually breaks sites:
• Unexpected certificate changes, routine or not
• The certificate on every IP a domain resolves to
• Revoked certificates, broken chains, SANs vs DNS
• Alert days that scale to short-lived certificates
• Pro: inventory and an audit report with verifiable IDs
• Free tools, full results, no sign-up: SSL/TLS, SANs, chain, TLS, DNS and a CSR decoder
Free for 3 domains. Nothing to install.
Replies
Hi everyone, I'm the maker of CertAvert. 👋
I built it after seeing too many sites go down for something as simple as an expired certificate. Since launch, it's grown a lot:
• Free tools, no sign-up: SSL/TLS, SANs, chain, TLS and DNS checks, plus a certificate/CSR decoder. Try one on your own domain at certavert.com
• Alerts for revoked certificates and unexpected certificate changes, not just expiry
• Checks the certificate on every IP a domain resolves to
• Email, Slack, Teams and Discord alerts
• Pro: inventory and an audit-ready certificate report
With certificate lifetimes dropping to 100 days in 2027 and 47 days by 2029, renewals will happen a lot more often, and a missed one will be easier to make.
Free for 15 domains. I'd love your feedback: what would make it more useful for you?