JWT Decoder
Inspect and debug JSON Web Tokens instantly β 100% private, client-side only.
Safe and Secure JWT Debugging
JSON Web Tokens often contain sensitive user information or internal system data. Using online decoders that send your token to a server can be a security risk. Our JWT Decoder works entirely within your browser. The token is never sent over the network, ensuring that your keys and data remain exclusively on your device.
What is a JSON Web Token?
A JWT is an open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object. It consists of three parts: a Header, a Payload, and a Signature, separated by dots (.).
Frequently Asked Questions
Is it safe to paste my JWT here?
Yes. This tool is serverless and executes only in your browser. Your token is never uploaded or logged anywhere.
Can I decode expired tokens?
Yes. Decoding doesn't require a valid signature or an unexpired date. It simply translates the Base64Url encoded strings into readable JSON.