Parse PEM certificates and view subject, issuer, dates, and fingerprint.
PEM is decoded client-side and parsed using regex on the certificate bytes. Results are best-effort for common X.509 fields.
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Quick answers to common questions
PEM-encoded X.509 certificates (-----BEGIN CERTIFICATE----- blocks).
The PEM base64 payload is decoded using JavaScript's built-in Base64 decoding function and parsed client-side using regex on the certificate bytes.
No. Parsing happens entirely in your browser.
This tool decodes certificates only, not private keys.
Your data is processed entirely in your browser. Nothing is sent to any server.