Generate Self-Signed SSL Certificates
Create self-signed SSL/TLS certificates for development and testing purposes. All generation happens locally in your browser.
Comma-separated list of additional domain names
Private Key
⚠️ Keep this key secret! Never share it.
Certificate
✓ Use this certificate for your web server configuration.
Combined PEM
✓ Contains both private key and certificate in one file.
Certificate Details
Common Name:
Organization:
Country:
Valid From:
Valid Until:
Key Size:
Generating SSL certificate...
This may take a few seconds
About SSL Certificates
- • Self-signed certificates are not trusted by browsers but are perfect for development and testing environments.
- • CA certificates can be used to sign other certificates for internal certificate authorities.
- • All generation happens locally in your browser. No data is sent to any server.
- • For production use, obtain certificates from a trusted Certificate Authority like Let's Encrypt.