JWT Parser
This tool only decodes and displays; it does not verify signatures (no key required), all parsing is done locally.
FAQ
Yes, safe. Decoding is done entirely in your browser locally, the token is never uploaded to any server, and is cleared when you close the page.
What is JWT Parsing?
JWT (JSON Web Token) is a widely used token format for authentication and information exchange, consisting of Header, Payload, and Signature connected by dots. JWT parsing decodes this seemingly garbled string into readable JSON, allowing developers to view claims, issuance time, and expiration time in the token.
This tool only performs local decoding for display and does not verify signatures (verification requires a server-side key). It automatically converts time-based claims like exp and iat to readable time and indicates whether the token has expired. All parsing is done locally in the browser; the token is never uploaded.
How to Parse a JWT Token
- 1Copy the complete JWT token (in the form of header.payload.signature).
- 2Paste it into the input box, and the tool will automatically decode it.
- 3View the JSON content of the Header and Payload and the expiration status.
- 4If needed, you can copy the decoded fields with one click.
Why Choose Our JWT Tool
Privacy First: Decoding is done locally in the browser; the token is never uploaded to the server.
Clear Information: Automatically converts time claims and indicates expiration status.
Security Reminder: Clearly states that JWT is only encoded, not encrypted, to prevent misuse of sensitive information.