Simply compare and be sure that SSL certificate matches with CSR or private key. It is especially helpful when you have more than one SSL product to install. The decoder works when you paste the entire contents of the file, including „-----BEGIN CERTIFICATE-----” and „-----END CERTIFICATE-----”. This tools is under dev,Please used OPENSSL TOOLS Download
openssl x509 -noout -modulus -in certificate.crt | openssl md5 openssl rsa -noout -modulus -in privateKey.key | openssl md5 openssl req -noout -modulus -in CSR.csr | openssl md5