TextLab 1.3.9 | macOS | 71 mb TextLab allows you to format, clean, validate or transform JSON, XML, HTML, SQL and many other text transformations.
TextLab suggests what operations can be performed based on your input. For example, if you copy and paste JSON into the application, it suggests to validate and format that JSON.
Compatibility: OS X 10.7.4 or later 64 bit
Mac App Store:
https://geo.itunes.apple.com/app/id1024903185