Developer Tools · Local processing

JWT Decoder

Inspect a JWT header and payload without uploading it.

Your workspace Nothing to install. No signup.

How to use JWT Decoder

Decoding does not verify the signature, issuer, audience or trustworthiness. A displayed expiration is informational only. Do not assume a decoded token is authentic.

Add your input

Enter your text or values in the workspace above.

Choose your settings

Review the options and limits before processing.

Use your result

Check the output, then save or copy what you need.

Good to know

Does this tool upload my input?

No. This tool processes your input on your device. Its libraries load from this site. Your input is not sent to a processing service.

What should I check before using the result?