Security

Generate strong random passwords with adjustable length and character sets — fully client-side, with entropy and strength readout.

Generate time-based one-time passwords (RFC 6238) compatible with Google Authenticator and 1Password. Paste a base32 secret or otpauth:// URL — codes update live, fully in-browser.

Compute HMAC signatures (SHA-1, SHA-256, SHA-384, SHA-512) for a key/message pair. Output as hex or base64, fully in-browser via Web Crypto.

Generate an RSA public / private key pair in PEM format (PKCS#1 or PKCS#8). Useful for JWT signing keys, SSH testing, and one-off encryption — for production keys, use OpenSSL.