# JWT decoder

Canonical page: https://nepocore.com/tools/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.

## How to use it

1. Enter a sample value, color, URL or structured input.
2. Choose the required format or options and run the tool.
3. Review the output and copy it into your own workflow.

## Example

Inspect an example token’s issued-at and expiration claims during development.

## Limits and checks

Decoding does not verify the signature, issuer, audience or trustworthiness. Never treat decoded claims as verified authentication.

## Access and processing

Free to use without an account. Interactive processing requires JavaScript in a modern browser. Input is processed in the browser rather than sent to a processing server. Optional browser storage is not a synchronized account.


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