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JWT Decoder

Paste a JWT to decode its header and payload, view claims in a readable form, and see human-friendly timestamps for iat, exp and nbf. Decoding only — no secrets required.

Examples

Input

eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiIxMjMifQ.xxxx

Output

{ "alg": "HS256" } / { "sub": "123" }

How to use JWT Decoder

Paste the token

Paste the full JWT (header.payload.signature).

Read the claims

We decode and pretty-print the header and payload.

Check expiry

Timestamps like exp are shown as readable dates.

Why use this tool

Readable header & payload

Human-friendly timestamps

Expiry warnings

Fully private — never sent anywhere

Frequently asked questions

Does this verify the signature?

No. This tool decodes the token so you can read it. Verifying the signature requires your secret key and should be done server-side.

Is it safe to paste real tokens?

Decoding happens locally in your browser and nothing is transmitted. Still, treat production tokens with care.

Discussion

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