JSON file is a file extension, a data format for storing and transferring data between different systems over HTTP networks. These files contain configuration values very popularly used by the Windows Operating System.

JSON is an abbreviated javascript object notation. Data in json is represented as a javascript object with keys and values Initialize values as language and it is a new file format. It is used as a lightweight data format in size to exchange between client and server over HTTP APIs

It contains a String, integers and arrays, and a list. It is also used to store some configuration data with json files with key and value pairs like key: value. These are enclosed in braces.

JSON is suitable for representing data in hash table format and is easy to read and write the data using various programming languages.

Advantages of JSON file extension

  • Easy to read by humans with simple syntax: The format contains keys and values in a text file, easily read by humans.
  • Lightweight data transfer format between client and server: Used as a JSON format for REST API communication between different components and Systems.
  • Processing JSON is faster compared with XML, YAML
  • Support all popular languages - GO, Java, Python, JavaScript, etc.
  • Maintainable
  • Easy to Read and write with any programming language
  • the content of these files with easy key and value pairs
  • It is lightweight compared with other formats such as XML

JSON Disadvantages

  • JSON data is not secure when interchanging data between different systems.
  • No support for binary data
  • No support for Date type but the date in the string can be saved
  • There is no support for comments in JSON content

JSON use cases

  • JSOn can be used in any type of project for configuration settings
  • Windows uses configuration settings for drivers, keyboards, mouses
  • Configuration and settings of the software applications

JSON file extension

Initialize configuration in a file with the extension .JSON, You can use any IDE or text editor to open this file.

JSON File extension rules:

  • JSON files extension is.JSON by default
  • file supports UTF-8 encoding format only
  • Supports whitespaces, tabs, and newlines asci code

MIME format type - text/plain

MIME is abbreviated as Multipurpose Internet Mail Extensions which is a format specified in request and response that is transferred between client and server across the internet. Content-Type and Accept headers in a request object are specified with this format following is the mime type for these documents


and request contains the below value for JSON data sending over the internet

Content-type : application/json

JSON supported Editors

All the popular IDE supports the JSON file extension and also provide plugins to validate the JSOn file content.

The editors provide auto format and linting capabilities.