CSR Decoder
Paste your Certificate Signing Request (PEM format) to instantly decode and verify its contents before submitting to a CA.
Paste your CSR above and click Decode CSR to inspect its contents.
What is a CSR?
A Certificate Signing Request (CSR) is a block of encoded text generated on the server where your SSL certificate will be installed. It contains your public key and information about your organisation (Common Name, Country, etc.), and is submitted to a Certificate Authority (CA) to obtain an SSL certificate.
Before submitting a CSR to a CA, it is good practice to decode it first to confirm all details — especially the Common Name (CN), which must match the domain name the certificate will secure.