SSL/CSR Decoder
Decode PEM-encoded SSL certificates or CSRs to view subject, issuer, validity, and SAN. Free, runs locally.
About this SSL/CSR Decoder tool
Paste a PEM-encoded certificate or CSR and CheckHub decodes the subject, issuer, validity dates, SAN entries, and key info.
How to use the SSL/CSR Decoder
- Step 1. Paste your PEM block.
- Step 2. Read the parsed certificate details.
Frequently asked questions
- What's the difference between a certificate and a CSR?
- A CSR is a signing request you send to a CA. A certificate is the signed result they return.
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