Crypto & security
13 tools
- Password generatorCryptographically random passwords with an entropy meter.
- JWT decoderDecode JWT header and payload, show expiry — no verification library.
- HMAC generatorHMAC-SHA-256 of a message with a key, via Web Crypto.
- AES encrypt & decryptAES-GCM encrypt text with a password-derived key.
- UUID v4 generatorGenerate RFC 4122 v4 UUIDs with crypto.randomUUID.
- Random token generatorHex, base64url, or nanoid-style tokens from CSPRNG.
- bcrypt hashHash a password with bcryptjs in the browser (slow by design).
- SHA-256 hashHash text or files with SHA-256 in the browser.
- SHA-1 hashHash text or files with SHA-1 in the browser.
- SHA-384 hashHash text or files with SHA-384 in the browser.
- SHA-512 hashHash text or files with SHA-512 in the browser.
- SHA-512/256 hashHash text or files with SHA-512/256 in the browser.
- MD5 hashHash text or files with MD5 in the browser.