What is a JWT encode / decode tool?
A JWT encode / decode tool allows you to encode payload data into a JSON Web Token (JWT) or decode an existing JWT to inspect its contents. These tools are essential for working with JWTs in authentication, authorization, and secure data exchange systems.
Why is encoding and decoding JWTs important?
Encoding transforms your data into a compact, secure token format that can be transmitted safely between parties. Decoding lets you verify and understand the payload, headers, and signature of a JWT. This is crucial for debugging, verifying claims, or ensuring token integrity during development.
How does encoding and decoding work?
JWT encoding uses a base64 format to convert data into a token, combining a header, payload, and signature. Decoding reverses this process, extracting and presenting the token’s readable content without altering its integrity or verifying its signature.
Is the JWT encode / decode tool secure?
Yes, we do not store your input.
What are the common uses of this tool?
JWT encode / decode tools are widely used for debugging token issues, verifying claims like user roles or expiration dates, and ensuring your application is processing tokens correctly during API development. The JWT decode option is the most popular.