JWT Decoder — TinyBench

About this tool

JWT (JSON Web Token) is an open standard for securely transmitting information as a JSON object. This tool lets you inspect any JWT token without sending it anywhere — everything is decoded locally in your browser using the Web Crypto API.

Features:

Decode header and payload instantly
Visual token breakdown with color-coded parts
Parsed claims panel — expiry, issuer, subject, audience
Expiry status — shows if token is valid, expired, or expiring soon
Supports HS256, RS256, ES256 and all common algorithms
100% private — token never leaves your browser

Common JWT Claims

issIssuer — who issued the token

subSubject — who the token is about

audAudience — intended recipient

expExpiration time (Unix timestamp)

iatIssued at (Unix timestamp)

nbfNot before (Unix timestamp)

jtiJWT ID — unique token identifier