How to use jwt decoder
Decode a JWT’s Base64URL header and payload into readable JSON. Inspect values locally without sending the token to a third-party decoder.
- Enter a sample value, color, URL or structured input.
- Choose the required format or options and run the tool.
- Review the output and copy it into your own workflow.
Try this next
Inspect an example token’s issued-at and expiration claims during development.
Decoding does not verify the signature, issuer, audience or trustworthiness. Never treat decoded claims as verified authentication.
Questions, answered.
Is jwt decoder free to use?
Yes. This tool is part of Nepocore’s free browser toolkit. There is no paid tier, file-download gate or application account required.
What should I check before using the result?
Decoding does not verify the signature, issuer, audience or trustworthiness. Never treat decoded claims as verified authentication.
Does this tool upload my files or text?
The tool processes its input in your browser. File contents and text are not sent to a processing server. See the privacy page for local storage and hosting details.