🪪JWT Decoder
Decode a JWT's header & payload.
About the JWT Decoder
Decode a JSON Web Token (JWT) to inspect its header and payload. Decoding happens entirely in your browser — nothing is sent anywhere and the signature is not verified. Free online JWT decoder for developers.
How to use the JWT Decoder
- 1Enter or generate your value in the JWT Decoder.
- 2Adjust length and character options as needed.
- 3Copy the result securely.
- 4Everything is generated locally using your browser — nothing is transmitted.
Why use this tool?
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Private by design
The JWT Decoder runs entirely in your browser — nothing you enter is uploaded to a server.
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Free, no signup
Use it as much as you like. There's no account, no paywall and no watermark.
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Fast & instant
Results appear the moment you type or click — no waiting, no page reloads.
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Works anywhere
Any device or browser, even offline once the page has loaded.
Frequently asked questions
Is it safe to paste a JWT here?＋
Decoding runs entirely in your browser and nothing is uploaded. Still, never paste production tokens/secrets into any online tool. The signature is not verified.