JWT Decoder
Decode a JSON Web Token to inspect its header, payload claims and expiry. Decoding is done entirely in your browser — your token is never transmitted or logged.
About the JWT Decoder
Decode a JSON Web Token to inspect its header, payload claims and expiry. Decoding is done entirely in your browser — your token is never transmitted or logged.
This tool runs completely offline in your browser. Nothing you enter is uploaded, which makes it safe to use with sensitive values such as internal addresses or tokens.
Frequently asked questions
What does the JWT Decoder do?
Decode a JSON Web Token to inspect its header, payload claims and expiry. Decoding is done entirely in your browser — your token is never transmitted or logged.
Is the JWT Decoder free to use?
Yes. The JWT Decoder is completely free with no account, no signup and no usage limits for normal use.
Is my input sent to your servers?
No. The JWT Decoder runs entirely inside your browser using JavaScript, so nothing you type is transmitted to NetScanly or anyone else.