Free Security & Crypto Tools

10 free browser-based security and cryptography tools. Check password strength, encrypt with AES-256, generate TOTP codes, build JWT tokens, create salts, and more — all 100% private, no data sent to servers.

All Security & Crypto Tools

Password Strength CheckerPopular

Check password strength and crack time estimate

AES Encryption

Encrypt and decrypt text with AES-256 in your browser

TOTP / 2FA Generator

Generate TOTP codes from a secret key (Google Authenticator compatible)

SHA-256 Generator

Generate SHA-256 hashes from any text

MD5 Generator

Generate MD5 hashes for checksums and fingerprinting

Salt Generator

Generate cryptographic salt values for password hashing

JWT Builder

Build and sign JWT tokens with a custom payload and secret

XOR Cipher

Encrypt or decrypt text with a XOR key

CSP Generator

Build a Content Security Policy header with a visual UI

RSA Key Generator

Generate RSA public/private key pairs in the browser