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JWT Decoder

Inspect JWT header and payload without verifying or uploading the token.

HƯỚNG DẪN • NHANH

Paste a compact three-part JWT and decode it locally to inspect the header, payload, signature and timing claims.

LOCAL • 100%

The token stays in browser memory. No verification key lookup or API request is performed.

HỖ TRỢ • FAQ

Does decoding verify the JWT signature? No. It only decodes the representation; it never proves authenticity.

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