Parse and analyze SSL/TLS certificates in PEM format. All processing happens in your browser.
Certificate Input
Paste the PEM-formatted certificate (including BEGIN and END lines)
Subject (Certificate Owner)
Issuer (Certificate Authority)
Validity Period
Public Key Information
Extensions
Signature & Identifiers
Privacy First
This tool only parses certificate data client-side. It does not verify signatures, check revocation status, or connect to any servers.