Crypto & Security

JWT Decoder & Validator

Decode headers/payloads, verify signatures with shared keys, and highlight expiration or claim issues.

Updated 2024-01-15

Decode header and payload safely (no signature verification performed).

JWT

Header

Header will appear here.

Payload

Payload will appear here.

Signature verification is not performed. Do not treat decoded tokens as trusted.

ROT Cipher

Rotate characters by N positions

Password Strength Checker

Analyze password security and get improvement suggestions

Password Generator

Create secure passwords with entropy insights