Security & Crypto Tools
Free online security tools to generate hashes (MD5, SHA-256, bcrypt, and more), create strong passwords, work with JWTs, and generate TOTP codes. All cryptography runs in your browser — no secrets ever leave your machine.
7 tools in Security
Bcrypt Generator
Generate and verify bcrypt password hashes online with a configurable cost factor. Free bcrypt tool — runs entirely in your browser with bcryptjs.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes instantly online, for free. Useful for checksums, file integrity checks, and password hashing.
JWT Decoder
Decode JWT tokens online and inspect the header, payload, and signature instantly. Free JWT decoder for debugging auth — no data ever sent anywhere.
JWT Generator
Create signed JWT tokens online using HS256, HS384, or HS512 via the Web Crypto API. Free JWT generator for testing auth flows — no server calls.
JWT Validator
Verify a JWT token's HMAC signature and check its expiry online, instantly. Free JWT validator for HS256, HS384, and HS512 signed tokens.
Password Generator
Generate strong, random passwords online using the Web Crypto API. Customize length and character sets, with a built-in strength indicator — free.
TOTP / OTP Generator
Generate RFC 6238 time-based one-time passwords (TOTP) online from a secret key. Free TOTP generator for testing 2FA flows — no sign-up needed.