Security
SSL Certificate Decoder
Decode and inspect SSL certificate details. Paste a PEMβencoded certificate to view its fields.
Decoded Information
β
How It Works
Paste your certificate in PEM format. The tool extracts base64 data and attempts to read certificate fields. For a complete decode, use OpenSSL or a dedicated library.
Example
Paste a cert β shows validity dates, issuer, and subject info.
Frequently Asked Questions
Does it work with DER format?
Only PEM (text) format is supported. Convert DER to PEM first.
Can I verify certificate signatures?
No, this tool only decodes the structure, it does not verify trust.