JWT Decoder

Decode any JWT token to inspect its header and payload — with human-readable expiry time. Runs fully locally.

Paste your JWT token:

How to use

Paste a JWT (three parts separated by dots). The header and payload decode into pretty JSON, with expiry shown as a readable date and countdown.

Is this JWT decoder free?

Yes, free with no signup or limits.

Is my token sent anywhere?

Never. Decoding happens entirely in your browser, so your token stays private.

Can it verify the signature?

No — signature verification needs the secret key. The tool notes this and shows the raw signature.

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Every tool runs 100% in your browser — no uploads, no signups. If a tool saved you time, consider supporting us with a small donation.