JWT.io

jwt.io · Verified Mar 21, 2026 · Online· 15m ago
Open Tool

Description

A browser-based debugger for JSON Web Tokens. Paste any JWT to instantly decode its header, payload, and signature. Verify token signatures with your secret or public key. Supports HS256, RS256, ES256, and other common algorithms — all processing happens in your browser with no account required.

No-Login Task

"Decode and verify JSON Web Tokens directly in your browser without sending tokens to any server"

Tags

Development ,Free,Web App,Client-Side Only,Open Source

Health History

14 days ago → Today · Uptime: 100%

Repository

auth0/jwt.io