The original source of JSONLint

There have been many implementations using this pure JavaScript implementation of JSONLint to format JSON on sites like JSONLint.com (the original), JSONLint Pro (a new version without ads). Both sites make it easy to format and validate JSON.

JSONLint is an online tool for validating and formatting JSON (JavaScript Object Notation) data. It can be used to check if a JSON document is well-formed and to ensure that it conforms to the JSON specific schema. It can also be used to beautify and format JSON data to make it more readable.

You may also want to check out JSON.org, WebReference, and Wikipedia.

To help get you started working with JSON data:

• Python:
  • json.loads(): Deserializes json data. It takes a json string and returns a python object (dictionary or list)
  • json.dumps(): Serializes json data. It takes a python object and returns a json string
• PHP:
  • json_decode(): Deserializes json data. It takes a json string and returns a php object or an associative array
  • json_encode(): Serializes json data. It takes a php object or an associative array and returns a json string
• JavaScript:
  • JSON.parse(): Deserializes json data. It takes a json string and returns a JavaScript object
  • JSON.stringify(): Serializes json data. It takes a JavaScript object and returns a json string
• Ruby on Rails:
  • JSON.parse(): Deserializes json data. It takes a json string and returns a Ruby object
  • JSON.generate(): Serializes json data. It takes a Ruby object and returns a json string
• C#:
  • JsonConvert.DeserializeObject(): Deserializes json data. It takes a json string and returns a C# object
  • JsonConvert.SerializeObject(): Serializes json data. It takes a C# object and returns a json string

Here are some of the most common libraries used for working with JSON data in different programming languages:

Python:

• json: The built-in json library in python is a popular choice for working with JSON data. It provides functions for serializing and deserializing JSON data and can handle both simple and complex data structures.
• simplejson: A third-party library that is similar to the built-in json library but is faster in some cases and has additional features such as support for serializing and deserializing datetime objects.
• ujson: another third-party library that is faster than the built-in json library, but it's not so compatible and it's not part of python's standard library

PHP:

• json: The built-in json functions in PHP are widely used for working with JSON data. The json_encode and json_decode functions are used for serializing and deserializing JSON data, respectively.
• JsonMapper: A third-party library that provides additional functionality for working with JSON data, such as the ability to map JSON data to PHP objects.

JavaScript:

• JSON: The built-in JSON object in JavaScript provides methods for working with JSON data, such as JSON.parse() and JSON.stringify().
• jQuery: The popular jQuery library provides a set of functions for working with JSON data, such as $.parseJSON() and $.toJSON().
• axios: A popular third-party library that provides functions for making HTTP requests and working with JSON data, it's popular for working with APIs

Ruby on Rails:

• json: The built-in json library in Ruby on Rails provides functions for working with JSON data, such as JSON.parse() and JSON.generate().
• Oj: A third-party library that provides faster JSON parsing and generation.

C#:

• Newtonsoft.Json: A popular third-party library that provides functions for serializing and deserializing JSON data, it's part of many .NET frameworks
• System.Text.Json: A built-in library that provides functionality for working with JSON data in C#, it's part of the .NET Core 3.0+

Enjoy!