#securityUpdated 2026-07-25

JWT Decoder

Decode JWT header and payload segments directly in the browser.

Input

Output

Result will appear here.

runs locally

Features

Readable JSON output
Header and payload split
No upload

How to use JWT Decoder

1Paste a JWT token
2Click Decode
3Review the header and payload

Example

Input — Example

eyJhbGciOiJub25lIn0.eyJzdWIiOiJhZGEifQ.

Output

Header: {"alg":"none"}
Payload: {"sub":"ada"}

What JWT Decoder does

Decode JWT header and payload segments directly in the browser. It runs entirely client-side, so nothing you enter is sent to a server — useful when working with sensitive data or when you just want an instant result without waiting on a network round-trip.