HOW IT WORKS
Decode a JWT header and payload
UtilityLake decodes the first two Base64URL sections and displays their JSON content.
JWTJSON sectionsRuns locally
01JWT
02Decode header + payload
03JSON sections
header.payload.signature → readable header and payload
Decoding does not verify the signature
A readable JWT is not proof that the token is authentic or trustworthy. The current tool does not validate its signature.
Your content stays in the browser
Processing runs locally in the page without requiring the content to be sent to UtilityLake.
02
In short
What exactly does it do?
UtilityLake decodes the first two Base64URL sections and displays their JSON content.
Example?
header.payload.signature → readable header and payload