Self-Signed SSL Certificate Generator
Generate self-signed SSL/TLS certificates and private keys locally in your browser for local development (localhost), Docker, and staging environments.
1 How to Use Self-Signed SSL Certificate Generator
- 1. Enter Common Name and validity days.
- 2. Generate key and cert.
- 3. Download files for your dev server.
⚙️ Cryptographic Specifications
- Algorithm
- X.509 Generator
- Execution Engine
- Web Cryptography API (SubtleCrypto)
- Environment
- Client Browser Sandbox
- Network Telemetry
- 0 Bytes (Zero Server Transmission)
🛡️ Security & Compliance
Enterprise developers can safely execute this tool with production secrets. Because execution takes place entirely within your browser's local V8 JavaScript runtime, no payloads are transmitted over HTTP, cached on third-party proxies, or stored in server logs.
Verified Safe for SOC2, HIPAA, and GDPR developer compliance audits.
Frequently Asked Questions
Can I use self-signed certs in production?
No, browsers will show a security warning because a trusted Certificate Authority did not sign it.
Related Cryptographic Tools
X.509 Certificate (PEM/CRT) Decoder
Decode and inspect X.509 SSL/TLS certificates (PEM/CRT format) client-side. View Subject, Issuer, Validity Period, SANs, and Serial Number with zero data leaks.
RSA Key Pair Generator (2048 & 4096-bit)
Generate cryptographically secure 2048-bit, 3072-bit, and 4096-bit RSA public and private key pairs in standard PKCS#8 and SPKI PEM format in your browser.