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Certificate Decoder

Decode and analyze X.509 SSL/TLS certificates in PEM format

About Certificate Decoding:

  • • This tool provides basic certificate information extraction
  • • For complete certificate analysis, use OpenSSL: openssl x509 -in cert.pem -text
  • • All processing is done client-side - your certificates are not sent to any server
  • • Supports PEM format certificates (-----BEGIN CERTIFICATE-----)