TLS Certificate Converter
Convert between certificate formats (PEM, DER, PFX) with optional password protection
Security
Certificate Conversion
Instructions
Supported Formats
- PEM - Base64 encoded ASCII file (.pem, .crt)
- DER - Binary encoded format (.der, .cer)
- PFX/PKCS#12 - Encrypted container format (.pfx, .p12)
Conversion Tips
- PFX files require a password for conversion
- Include intermediate certificates for complete chains
- Maximum file size: 5MB
Security Note
All conversions happen in your browser. Your certificates are never sent to our servers.