JWT Tools

Decode JSON Web Tokens to inspect headers, payloads, and standard claims. Generate HMAC-signed tokens, edit claims and re-sign, or verify signatures with your secret or RSA public key — essential for API debugging and OAuth development.

JWT Tools

• JWT Decoder

  Paste a JSON Web Token to decode its header and payload, inspect standard claims, and check expiration. All processing runs in your browser.

• JWT Generator

  Create signed JSON Web Tokens from a JSON payload. Select an HMAC algorithm, enter your secret key, paste claims, and click Run.

• JWT Validator

  Verify a JWT signature and inspect claims. Enter your HMAC secret or RSA public key (PEM), paste the token, and click Run.

• JWT Claim Editor

  Load an existing JWT or start from scratch. Edit header and payload JSON, enter your signing secret, and click Run to generate a new signed token.