What is JSON

JSON (JavaScript Object Notation) is a lightweight, human-readable data format used for data interchange. It is based on a subset of JavaScript.

History of JSON

  • JSON is an open standard file format and data interchange format that uses human-readable text to store and transmit data objects consisting of attribute–value pairs and arrays.
  • It is a language-independent data format. It was derived from JavaScript, but many modern programming languages include code to generate and parse JSON-format data.
  • Douglas Crockford originally specified the JSON format in the early 2000s1. He and Chip Morningstar sent the first JSON message in April 2001.
  • JSON grew out of a need for a real-time server-to-browser session communication protocol without using browser plugins such as Flash or Java applets, the dominant methods used in the early 2000s.
  • The acronym originated at State Software, a company co-founded by Crockford and others in March 2001.
  • After RFC 4627 had been available as its “informational” specification since 2006, JSON was first standardized in 2013, as ECMA -404.
  • RFC 8259, published in 2017, is the current version of the Internet Standard STD 90, and it remains consistent with ECMA-404.
  • That same year, JSON was also standardized as ISO / IEC 21778:2017.
  • The ECMA and ISO / IEC standards describe only the allowed syntax, whereas the RFC covers some security and interoperability considerations.

Features of JSON

JSON is a simple format consisting of key-value pairs. It is easily readable by humans and machines alike.

Uses of JSON

JSON finds application in various areas:

  • Web development: Transmitting data between web browsers and servers, often used for form submissions.
  • APIs: Popular format for enabling communication between applications.
  • File storage: Suitable for storing readable and portable data.

Why Learn JSON?

Reasons to learn JSON include:

  • Popularity: Ample learning resources, including tutorials and books, are available.
  • Versatility: Enables data exchange between applications and file storage.
  • Simplicity: Easy to learn and use.


JSON is a powerful and versatile data interchange format. Its simplicity and readability make it widely adopted for various applications.

This article aims to provide an understanding of JSON’s features and benefits, emphasizing its importance for individuals working with data.

If you have any further inquiries, please feel free to ask.