Background: In development, there is often a need to format JSON strings. It is not convenient to always rely on online formatting tools. One day, I saw a plugin for Xcode related to this on the App Store, but it was quite expensive. Hahaha, so I thought about creating my own. First, I will research the implementation principles of JSON formatting, then I will look into the implementation of the Xcode plugin, and finally, I can even create a Mac version. I'll give myself a big thumbs up! 😄