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Instrument N° 34 · Developer

JWT
decoder.

Inspect header, payload and claims of any JSON Web Token. Timestamps converted to human time. Stays on your device.

Decoding is local — nothing is sent anywhere. Signature verification would require your secret key, so this tool decodes only.

Header
{
  "alg": "HS256",
  "typ": "JWT"
}
Payload
{
  "sub": "meloze-user",
  "name": "Jane Doe",
  "iat": 1700000000,
  "exp": 2000000000
}
Claims
  • subSubject
    meloze-user
  • name
    Jane Doe
  • iatIssued at
    17000000002023-11-14 22:13:20 UTC · 884d ago
  • expExpires
    20000000002033-05-18 03:33:20 UTC · in 2588d
Signature

signature-placeholder