JWT Decoder

Paste a JWT token to inspect its header, payload, and signature. Timestamps are auto-converted to readable dates.

JWT Token

Header

Payload

Signature

This tool only decodes the token client-side. It does NOT verify the signature.

Features

Show Header / Payload / Signature

Parse timestamps

Expiration check

Decode only (no verification)

1. Paste your JWT token (the long string with two dots) into the input box.

2. The header, payload, and signature are decoded instantly on the right.

3. Expiration date is highlighted if the token has expired.

What is a JWT?

A JSON Web Token (JWT) is a compact, URL-safe token used for securely transmitting information between parties.