JWT Decoder

Features

• Decode JWT Tokens: Decode JSON Web Tokens (JWT) to view their header, payload, and signature.
• Base64 Decoding: Automatically decode Base64-encoded strings in the token.
• Human-Readable Format: Display the payload in a readable JSON format.
• Validation: Check the token's structure and identify common issues.

How to Use

1. Input JWT:

   • Paste the JWT string into the input field.

2. Decode:

   • Click the "Decode" button to view the token's header, payload, and signature.

3. Analyze:

   • Review the decoded payload and header for claims, expiration, and other details.

What is a JWT?

A JSON Web Token (JWT) is a compact, URL-safe token used for securely transmitting information between parties. It consists of three parts: a header, a payload, and a signature.

Example

JWT Decoding Example

Input JWT:

eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c

Decoded Payload:

{
  "sub": "1234567890",
  "name": "John Doe",
  "iat": 1516239022
}