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JSONExport is a desktop application for Mac OS X which enables you to export JSON objects as model classes with their associated constructors, utility methods, setters and getters in your favorite language.


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JSONExport is Seeking New Maintainers/Contributors

Hello everyone,

I've had a great time working on this project, I kicked it of with the support for few languages, and the amazing community added plenty more! However, I am currently unable to continue actively maintaining this project and attend to all incoming issues/requests. I would like to take this opportunity to express my gratitude to everyone who has contributed to the development of this project over the years.

I'm hoping to find someone (or a group of people) who are interested in taking over as maintainers or contributors. If you are interested, here's how you can express your interest:

  1. Fork the repository and make some contributions. You can start with solving existing issues or adding new features.
  2. Send a pull request with your changes. I promise I will be more attentive to future PRs.
  3. After a few successful pull requests, create an issue titled "[Your Name] for maintainer" and in the description, reference your earlier contribution and any additional features/changes you would like to bring to the project, if any.

The community will have a chance to voice their thoughts on the issue. If the feedback is neutral or positive, and there is no clear blocker on why you wouldn't be a good contributor, I will add you to the project as maintainer.

I believe in the power of open source and the incredible community that drives it. I am confident that with your support, JSONExport can continue to grow and evolve.

Thank you for your understanding and for your continued support of JSONExport.

Best regards,



JSONExport is a desktop application for Mac OS X written in Swift. Using JSONExport you will be able to:

  • Convert any valid JSON object to a class of one of the currently supported languages.
  • Preview the generated content before saving it.
  • Include constructors only, utility methods only, both or none.
  • Change the root class name.
  • Set a class name prefix for the generated classes.
  • Set package name for Java files.

Generated Files

Each generated file, besid the getters and setters (for Java) can include:

  • A constructor wich accepts an instance of NSDictionary, JSON, JSONObject instance depending on the file language, and the class will use this object to fill its properties data.
  • A utility method which converts the class data into a dictionary again.

Currently supported languages

Currently you can convert your JSON object to one of the following languages:

  1. Java for Android.
  2. Java for Realm Android.
  3. GSON for Android
  4. Swift Classes.
  5. Swift Classes for SwiftyJSON library.
  6. Swift Classes for Realm.
  7. Swift - CoreData.
  8. Swift Structures.
  9. Swift Structures for Gloss
  10. Swift Mappable Classes for (Swift 3) ObjectMapper
  11. Swift Structures for Unbox
  12. Objective-C - iOS.
  13. Objective-C - MAC.
  14. Objective-C - CoreData.
  15. Objective-C for Realm iOS.

Screenshot shows JSONExport used for a snippet from Twitter timeline JSON and converting it to Swift-CoreData. alt tag


Kindly clone the project, and build it using xCode 8 and above.

To Do

  • Support Objective-C Done
  • Sync multible classes with the same name or have the same exact properties Done
  • Support to parse JSON arrays of objects Done
  • Load JSON data from web
  • Open .json files from JSONExport
  • Supported languages management editor.
  • Beside raw JSON, load the model raw data from plist files as well.

Known Limitations:

  • When exporting to subclasses of NSManagedObject, some data types can not be exported. For example core data does not have data type for "array of strings"; in turn, if your JSON contains an array of strings, the exported file will not compile without you fixing the type mismatch.
  • When exporting subclasses of RLMObject, you will have to enter the default values of premitive types manually. This is because of dynamic properties limition that prevents you from having an optional premitive type.
  • When exporting to CoreData or Realm and you want to use the utility methods, you will need to manually watch for deep relation cycle calls; that is, when you convert an object to dictionary, this object try to convert one of its relation to a dictionary and the relation tries to convert the original object to a dictionary, that will cause a kind of cycle where each object involved calls the other object's toDictionary method infenitly...
  • Avoid attempt to model a JSON object with empty values, because JSONExport does not understand empty values and can not guess their types.
  • Deep nesting of arrays and objects will not be exported in a proper model files.

Final Note

The application still in its early stage. Please report any issue so I can improve it.


JSONExport is available under custom version of MIT license.


JSONExport is a desktop application for Mac OS X which enables you to export JSON objects as model classes with their associated constructors, utility methods, setters and getters in your favorite language.







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