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SSL Certificate Decoder

network tools

SSL Certificate Decoder

Decode any PEM certificate in your browser — subject, issuer, serial, public key, SHA-1/SHA-256 fingerprints, validity and extensions.

Upload .crt / .cer / .pem

Paste a PEM certificate or upload a file to decode subject, validity, fingerprints and extensions — all in your browser, nothing is uploaded.

How to Use