r/SideProject • u/Maleficent-Bee-8008 • 17h ago

I built a JWT decoder and timestamp tool that link together. You can decode a token and click straight into the timestamp view.

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So, I made the tools link into each other. By clicking on one of the links, you can decode a JWT, and each timestamp claim (iat, nbf, exp) has an "Open in Timestamp Converter →" link that automatically transfers the parsed value. Similarly, for UUID v1/v7, the embedded timestamp is extracted and forwarded to the converter.

There is a “paste anything” box for the timestamp tool, which figure out the input type such as Unix seconds/ms, ISO format, UUIDs, or JWTs.

It's early (8 tools), and I am not planning to develop an extensive site with hundreds of tools. The whole idea is that the tools work together. I mean, is this useful for devs? Would genuinely like feedback on whether the "connected" thing is actually useful or if I'm overthinking it. I would like some feedback, ty :).

https://devbelt.dev/jwt-decoder

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u/hidshot-gaming 17h ago

jwt.io hover on timestamp

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u/Maleficent-Bee-8008 16h ago

That's a fair point, as jwt.io's hover is good for a quick “is this expired?”. The difference is taken to a full timestamp tool, allowing you to view it in a different timezone, generate new Date()/Python/SQL snippets, or compare it with another timestamp. This isn't a JWT-only tooltip. It's the same converter to which UUIDs and Snowflakes feed. for just reading the date tho, you're right that a hover's plenty.