Supports JSON formatting validation, compression, result copying, and file download. Note: File downloads require the same browser environment. Switching browsers will prevent the download from working.

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JSON, which stands for JavaScript Object Notation, is a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate. It is based on a subset of the JavaScript Programming Language but is language-independent and widely supported across different languages.

The JSON data format is a collection of key-value pairs, similar to objects and dictionaries in JavaScript. The key must be a string, and the value can be any valid JSON data type (string, number, object, array, boolean, or null). JSON objects are enclosed in curly braces {}, with key-value pairs separated by commas and keys and values separated by colons.

Here is a simple JSON object:

 {
    "name": "John Doe",
    "age": 30,
    "isStudent": false,
    "courses": ["Math", "English", "Computer Science"],
    "address": {
        "street": "123 Main St",
        "city": "Anytown",
        "state": "CA",
        "zip": "12345"
    }
}

This JSON object describes a person, including their name, age, whether they are a student, the courses they are taking, and their address information.