What is this tool?
A JWT is a compact token format made of Base64URL-encoded sections. Developers often decode tokens to inspect claims such as issuer, subject, audience, and expiration time.
How to use it
Paste a three-part JWT to view its decoded JSON header and payload.
Privacy
This tool is designed to process your input locally in the browser. Avoid entering passwords, private keys, or other sensitive production data into any online tool.
Frequently asked questions
Does this verify the JWT signature?
No. Decoding a token does not verify its signature or prove that it is trustworthy.
Should I paste production tokens?
Avoid sharing sensitive production tokens with any online tool, even when processing is local.