SSL Checker
Inspect SSL/TLS certificates for a domain.
SSL Checker connects from Tool World servers to read a hostname’s TLS certificate — subject, issuer, validity dates, and fingerprint. Private and local hosts are blocked.
Frequently Asked Questions
Do you store certificates?
No. Results are returned to your browser and not saved.
Why was my host blocked?
Private, local, and cloud-metadata addresses are blocked to prevent SSRF abuse.
Does authorized=false mean unsafe?
It means Node could not validate the chain (self-signed, incomplete chain, etc.). Review the details.