Use our free online SSL certificate decoding tool to verify that your SSL certificate is valid and has not expired. Use this tool to decode an SSL certificate in PEM, DER or PFX format and make sure all the data is correct. All you need to do is copy the SSL certificate into the text box below.
A valid SSL certificate should:
start with '-----BEGIN CERTIFICATE-----'
and end with '-----END CERTIFICATE-----'.
Once the SSL certificate is decoded, it will describe the following information: Issue Date, Certificate Expiration Date, Private Key details, Serial Number, Key Size, Common Name, SAN Domains, Organization, Email Address, Country and other technical details.