Certificate Inspector
Decode and analyze X.509 certificates in detail
Upload Certificate
Paste a PEM-encoded X.509 certificate or upload a .crt/.pem file
Supported Formats:
- PEM-encoded certificates (.pem, .crt, .cer)
- Certificates must include BEGIN/END markers
- Base64-encoded X.509 certificate data
Get Started
Upload a certificate to inspect its details, verify its properties, and analyze extensions.
1. Upload
Paste PEM-encoded certificate or upload a file
2. Inspect
View detailed information about the certificate
3. Compare
Upload multiple certificates to compare them side-by-side