JWT Decoder
Decode and inspect JSON Web Tokens (JWTs) securely in your browser
Header
DecodedPayload
DecodedToken Details
Issued At
-
Expiration
-
Algorithm
-
Status
-
Understanding JWTs
How JSON Web Tokens work and why they're important
What is a JWT?
JWT (JSON Web Token) is an open standard for securely transmitting information between parties as a JSON object. This information can be verified and trusted because it is digitally signed.
JWT Structure
JWTs consist of three parts separated by dots: header.payload.signature. The header typically contains the token type and the signing algorithm being used.
Security Best Practices
Always validate JWT signatures, check expiration times, and never store sensitive data in a JWT payload as they can be decoded (but not altered without the signature key).
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