Developer Workflows3/6/20261 min readBy CoolTool editorialDeveloper tools, APIs, Debugging

Developer Toolbox: JSON, UUIDs, and JWTs Explained

How to use common developer tools like JSON formatters, UUID generators, and JWT decoders.

Developer Toolbox: JSON, UUIDs, and JWTs Explained

If you build or debug APIs, you will use JSON, UUIDs, and JWTs daily. These tools save time and reduce mistakes.

JSON Formatter

Unformatted JSON is hard to read and easy to break. A formatter validates and pretty-prints the data.

UUID Generator

UUIDs are unique identifiers. You often need them for test data, mock records, or API requests.

JWT Decoder

JWTs are encoded. A decoder helps you verify payloads, expiry, and claims without copying into scripts.

Recommended tools

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