JWT Decoder

Decode JWT tokens instantly in your browser. Header, payload, and signature are decoded client-side - your token never leaves your device.

ProJWT Decoder is a Pro feature. Free for occasional use, unlimited with Pro.

JWT Token

JWT

Paste a JWT token and click Decode

How JWT works

HEADER

Algorithm & token type. Base64URL-encoded JSON.

PAYLOAD

Claims and data. Not encrypted - anyone can decode it.

SIGNATURE

Verifies the token hasn't been tampered with.

Pro Feature

JWT tokens contain sensitive data. SafeJSON Pro ensures your tokens never leave your browser - $5/month, cancel anytime.