CSR Decoder
Paste a PEM CSR and decode subject, SAN, signature, and key details.
FAQ
What is a CSR? A Certificate Signing Request contains the subject and public key details required by a CA to issue an SSL certificate.
Does this tool validate the CSR signature? Yes, the decoded output includes whether the CSR signature is valid.
What should I check after CSR decoding? Use SSL Checker after certificate issuance, and Certificate Decoder to inspect the issued certificate fields.