Question 1

What is a JWT?

Accepted Answer

A JSON Web Token (JWT) is a compact, URL-safe means of representing claims to be transferred between two parties. The claims in a JWT are encoded as a JSON object that is digitally signed using JSON Web Signature (JWS).

Question 2

Is it safe to decode JWTs online?

Accepted Answer

Our JWT Encoder/Decoder operates entirely client-side within your browser. This means your JWTs are never sent to our servers, ensuring your data remains private and secure.

Question 3

What are the parts of a JWT?

Accepted Answer

A JWT consists of three parts separated by dots (.): the Header, the Payload, and the Signature. The Header typically consists of two parts: the type of the token, which is JWT, and the signing algorithm being used. The Payload contains the claims. The Signature is used to verify that the sender of the JWT is who it says it is and to ensure that the message hasn't been changed along the way.

Question 4

Why would I encode a JWT?

Accepted Answer

Encoding a JWT is typically done when you are creating a new token to be used for authentication or information exchange between parties. This tool helps you construct the header and payload for your JWT.

Question 5

Why would I decode a JWT?

Accepted Answer

Decoding a JWT allows you to inspect its contents (header and payload) to understand the claims it carries. This is useful for debugging, verifying token contents, or understanding how a system uses JWTs.

JWT Encoder / Decoder

Decode JWT

Encode JWT

Understanding JWT

Frequently Asked Questions (FAQ)

What is a JWT?

Is it safe to decode JWTs online?

What are the parts of a JWT?

Why would I encode a JWT?

Why would I decode a JWT?