JWT Encode Decode token
Create JWTs or decode JWT header and payload and inspect common claims.
What this tool does
Encode mode creates unsigned or HMAC-signed JWTs in the browser. Decode mode inspects JWT structure only and does not verify the token signature.
When to use it
JWT Encode Decode is useful during Encoding work when you need to quickly convert, inspect, format, or generate small pieces of developer data. It is intended for API responses, configuration snippets, logs, test inputs, and browser-side checks.
Input and output example
Input example: JWT token or JSON header and payload
Output example: Decoded header, payload, and common claim fields
Notes and limitations
Use the result as a development aid and verify it before applying it to production systems. Check encoding, timezone, security, and format requirements when the output will be used in an application. Related concept: token.