JWT Decoder

Decode and verify JSON Web Tokens

About This Tool

Decode and inspect JSON Web Tokens (JWT) with our free JWT decoder. View the header, payload, and signature of any JWT. Verify token signatures, check expiration times, and understand JWT structure. Perfect for developers working with authentication, APIs, and OAuth implementations.

  1. Paste your JWT token into the input field
  2. View the decoded header and payload automatically
  3. Check token expiration and issued times
  4. Verify the signature (if you have the secret)
  5. Inspect claims and understand the token structure
JWT Decoder - big.tools