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JWT Decoder

Inspect any JSON Web Token: header, payload, signature, claims, and expiry status. Token is decoded entirely in your browser and never sent to a server.

HS256Expires in 0s

Header

{
  "alg": "HS256",
  "typ": "JWT"
}

Payload

{
  "sub": "1234567890",
  "name": "Jane Doe",
  "role": "admin",
  "iat": 1759900000,
  "exp": 1999999999
}

Signature

signature_placeholder

This tool only decodesthe token. It does not verify the signature, since that requires the issuer's secret key. Verify on your server.

Claims
sub
1234567890
Subject
name
Jane Doe
role
admin
iat
1759900000
10/8/2025, 5:06:40 AM (UTC)
Issued at
exp
1999999999
5/18/2033, 3:33:19 AM (UTC)
Expires at

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This free tool is built and maintained by KSPR Technologies. We build web, mobile & AI products for clients.

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