Free JWT Decoder — Decode JWT Online

JWT Header

Payload

How to use

Paste JWT, click Decode. Never paste tokens that contain secrets.

Why use

Inspect JWT contents for debugging. We do not verify signatures.

Frequently asked questions

Do you verify the JWT signature?

No. This tool only decodes the base64 parts and shows header and payload. Never paste JWTs that contain secrets; assume decoding is for inspection only.

What is a JWT?

JSON Web Token — three base64 parts (header.payload.signature) used for auth and claims. Decoding shows the JSON inside header and payload.

Is my JWT stored?

No. We decode on request and don’t save the token or its contents.