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JWT Decoder

Inspect JWT claims locally—no upload.

JWT string

Header

—

Payload

—

How to use & FAQ

Debug exp, roles, and aud without sending production tokens to untrusted sites.

Decoding ≠ trust—verify signatures in your app.

Uploaded?▾

No.

Signature verified?▾

Only if tool verifies with a key.

Where is exp?▾

Usually exp claim in payload.

alg none?▾

Reject in production.

Refresh tokens?▾

If JWT-shaped, yes.

Signup?▾

No.