JWT Decoder & Debugger
Safely decode and inspect JSON Web Tokens (JWT) without sharing sensitive data.
Encoded JWT Token
Waiting for input...
Decoded Header
Ready for results...
Decoded Payload
Ready for results...
Your data stays in your browser.
We use client-side parsing to ensure your authorization headers are never shared with our servers.
In-Depth Guide
Everything you need to know
JSON Web Token (JWT) is a compact, URL-safe means of representing claims to be transferred between two parties. Our tool allows you to instantly decode the header and payload sections to inspect their contents.
Security Warning:
JWTs are encoded, NOT encrypted. Never include sensitive data like passwords or credit card numbers in a JWT payload, as anyone who possesses the token can decode it.