Magic decoder rings!
We got you.
Useful things that run right here in your browser. No install, no account, no data leaving your machine.
Built for the person who got handed a .cer file and a deadline. Zero jargon, all answers.
Certificate Inspector
Paste a PEM certificate (the -----BEGIN CERTIFICATE----- block) and get a plain-language breakdown. Expiry date, subject, issuer — the things you actually need to know.
Everything runs in your browser. Your certificate never leaves your device.
Domain Certificate Lookup
Enter a domain name and see what certificates have been publicly logged for it — expiry dates, issuing CA, and common names. Useful for checking your own certs or investigating a domain.
Data comes from crt.sh, the public certificate transparency log search engine. Results reflect publicly issued TLS certificates only — internal / private CA certificates don't appear here.
Password & PFX PIN Generator
Generate secure passwords for PFX exports, certificate store backups, service accounts — whatever needs a strong random string. Uses your browser's cryptographic random number generator, not some math.random() nonsense.
PEM ↔ Base64 Converter
Strip or add the -----BEGIN/END----- headers. Sometimes you need just the raw Base64, sometimes you need the full PEM. Here you go.