JWT Decoder

Popular

Decode JSON Web Tokens (JWT) into readable Header, Payload claims, and Expiration timestamps with zero network requests.

100% In-Browser Privacy

Zero Server Uploads

Header (Algorithm & Token Type)

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

Payload (Claims & Data)

{
  "sub": "1234567890",
  "name": "Aakash Sharma",
  "admin": true,
  "iat": 1516239022,
  "exp": 1916239022
}

Expiration (exp):9/21/2030, 4:37:02 PM (Valid)

Issued At (iat):1/18/2018, 1:30:22 AM

In-Browser Security:

Decoded entirely on your device via client-side base64url routines. No token strings are transmitted to remote servers.

Key Capabilities & Features

Color-coded Header and Payload JSON syntax

Live expiration calculation and countdown status

Client-side Base64Url parsing

Zero data transmission

Never. Softnag parses JWTs 100% locally via browser Base64Url decoding routines.

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Beautify, validate, minify, and debug JSON data with real-time error syntax diagnostics.

Encode text and binary files to Base64 format or decode Base64 data back into plaintext and files.