JSON Formatter Online


This is an online tool that can re-encode your JSON format. JSON strings always remove empty spaces, and are indented to save network bandwidth and document size, making it easier to read. The JSON format is widely adopted into all web development.

JSON Formatter Online

How to use?

  1. Enter JSON code in the editor.
  2. Click "Format JSON" button and it will format the JSON code and show in output.
  3. Click "Copy" button. Success! Copied successfully. Please paste anywhere.
{ "bookList": [ { "title": "The Cat in the Hat", "author": "Dr. Seuss", "price": 4.99 }, { "title": "Ender's Game", "author": "Orson Scott Card", "price": 8.99 }, { "title": "Prey", "author": "Michael Crichton", "price": 6.95 }, { "title": "Honor Harrington", "author": "David Weber", "price": 8.75 } ] }
    "bookList": [
           "title": "The Cat in the Hat",
           "author": "Dr. Seuss",
           "price": 4.99
            "title": "Ender's Game",
            "author": "Orson Scott Card",
            "price": 8.99
            "title": "Prey",
            "author": "Michael Crichton",
            "price": 6.95
            "title": "Honor Harrington",
            "author": "David Weber",
            "price": 8.75

Why to use online JSON Formatter

JSON Formatter makes it easier for developers to read, understand, and debug it. It also makes it simpler for developers to read the JSON code of other developers.

What is JSON?

What is JSON

JSON stands for Javascript Object Notation, this is a type of data that follows a certain rule that most programming languages can read today, you can use it to save it to a file, a record in the database is very easy. JSON has a simpler format, easier to use and query than XML, so its application is very popular today.

The Pros and Cons of JSON

The Pros and Cons of JSON


  • Short and simple: Unlike some other formats, JSON's structure follows a compact, simple style to improve readability by users. Especially when working with a complex system, JSON tends to make significant improvements.
  • Faster: Parsing JSON is faster than XML because the DOM manipulation library in XML requires more memory to process large XML files. In contrast, JSON requires less data, resulting in reduced cost and increased parsing speed.
  • Can be read easily: The JSON structure is very simple and easy to read. Regardless of the programming language you are using, you can easily map object domains.
  • Structured data: JSON uses a map data structure, while XML follows a tree structure. Key-Value pairs are task-limited but facilitate predictive modeling and are relatively easy to understand.


  • There is no schema: Since there is no schema, you have the flexibility to present your data any way you want. But conversely, you can inadvertently create the wrong type of data.
  • No variety of numbers: Because JSON uses IEEE-754 Floating-Point Real Number format. This makes it impossible to take advantage of the rich and nuanced number types available in many programming languages.
  • No date format: This shortcoming meant that developers had to use strings representing dates, resulting in formatting differences, or having to represent dates in milliseconds.
  • No comments: This makes it impossible for you to request additional documentation and increases the possibility of misunderstandings.
  • Still not the most concise: Although JSON is shorter than XML, it is still not the most concise data exchange format. So for high-volume or special-purpose services, you'll want to use more efficient data formats than JSON.

What is JSON used for?

JSON is a syntax for sending, receiving, and exchanging data.

1. Data exchange

When exchanging data between the browser and the server, the data can only be text. JSON is text, we can convert any JavaScript object to JSON and send JSON to the server.

We can also convert any  JSON  received from the server into  JavaScript objects. This way we can work with data as JavaScript objects without complicated parsing and translation.

2. Send data

If you have data stored in a JavaScript object, you can convert that object to JSON and send it to the server.

For example:

var myObj = { name: "Roger", age: 19, city: "New York" };
var myJSON = JSON.stringify(myObj); window.location = "demo_json.php?x=" + myJSON;

In the above example, the function JSON.stringify()  is used to convert the  Javascript  object to a string.

3. Receive data

If you receive data in  JSON format, you can convert it to a  JavaScript object.

For example:

var myJSON = '{"name":"Jack", "age":19, "city":"New York"}';
var myObj = JSON.parse(myJSON);
document.getElementById("demo").innerHTML = myObj.name;

In the above example, the function JSON.parse() is used to create a Javascript Object from the string JSON.