Certificate Decoder

Decode X.509 certificates in PEM and P12/PFX formats and inspect their certificate information.

PEM Certificate

Upload or paste a PEM encoded X.509 certificate.

P12 / PFX Certificate

Upload a PKCS#12 certificate file and provide its password.

Certificate File

Select a .pem, .p12 or .pfx certificate file

P12 / PFX Password

Or Paste PEM Certificate

Certificate Information

Certificate Type

Version

Serial Number

Signature Algorithm

Subject

Issuer

Common Name (CN)

Organization (O)

Valid From

Valid To

Certificate Status

Public Key Algorithm

Public Key Size

Subject Alternative Names (SAN)

No SAN information found.