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JWT Decoder

Decode and inspect JSON Web Token headers and payloads instantly. See algorithm, claims, expiration status, and timestamps. All processing happens in your browser.

no account no rate limit nothing stored

Token

JWT Token

Header

Payload

Signature

Signature verification requires the secret key and is not performed client-side.

// how it works

How it works

step 01

Paste

Paste your JWT token. It will be decoded instantly. Header, payload, and signature are separated.

step 02

Inspect

View the decoded header and payload as formatted JSON. See algorithm, expiration, and all claims.

step 03

Verify

Check expiration status at a glance. Your token never leaves your browser. Fully client-side.

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