Self-Signed Certificate Guide
New🔥 PopularOpenSSL commands for local HTTPS dev certs
Security Tools
NewPopular
- 1Enter data locally in browser
- 2Generate or decode securely
- 3Copy — keys never leave device
⚠️ Generates commands for local dev HTTPS. Run on your machine — keys never leave your device.
OpenSSL (one-liner)
openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -days 365 -nodes -subj "/CN=localhost"
mkcert (trusted locally)
mkcert localhost "*.localhost"
Instant — no signupPrivate by default5 languages
Cryptographic operations run locally — keys never leave your device.
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