Tool Categories

CSR Decoder

Decode Certificate Signing Request and view detailed information

CSR Decoder

CSR Input
Paste your Certificate Signing Request

CSR decoding happens entirely in your browser. No data is sent to any server.

How to Use
  1. Paste your CSR code (starts with -----BEGIN CERTIFICATE REQUEST-----)
  2. Click "Decode CSR" to parse the request
  3. View subject details, public key info, and SANs
  4. Click "Use Example CSR" below to try a sample
CSR Details
Decoded certificate information

Enter CSR to view decoded information