Developer

JWT Decoder

Inspect a JSON Web Token header, payload and expiry. Free, no sign-up, and it runs in your browser — your files are never uploaded.

How to use

1. Paste a JWT
2. Read the header, payload and expiry status

Questions

Is my token sent anywhere?

No. Decoding happens entirely in your browser. Even so, avoid pasting live production tokens into any website.

Do I need an account?

No. Every tool is free to use without signing up.

Is my data uploaded?

No. This tool runs in your browser, so the text and files you use stay on your device.

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