Free tool · Decode
SSL Certificate Decoder
Open any .crt or .pem file in a text editor, copy the block that starts with BEGIN CERTIFICATE, and paste it here. Useful when you have several certificate files and are not sure which one is the newest.
Paste your certificate
Decoded in your browser. Paste one certificate at a time.
Result
Subject, issuer, validity dates, SANs, key size, serial number and fingerprints appear here.
What is the difference between the certificate and the CA bundle?
Your certificate carries your domain name. The CA bundle carries the intermediate certificates of the certificate authority. Both are installed together. Decode each file to see which is which: the CA bundle subject will name Sectigo, DigiCert or another authority, not your domain.
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