Minify JSON

Convert multi-line JSON into inline JSON code

Sample

Introduction

This online JSON minifier tool helps you compress and optimize your JSON code effortlessly. It’s ideal for reducing file size and improving the performance of applications that handle JSON data.

How to Use This Tool

Paste your JSON code directly into the editor or type it in.
Click the Minify button to compress your JSON code.
After minifying, you can:
- Download the optimized result.
- Save or share it using a unique link.
- Sign in with Google or GitHub to save your minified JSON for future use.

What is JSON?

JSON (JavaScript Object Notation) is an open standard file format used for storing and exchanging data. It represents data as attribute–value pairs and arrays using a human-readable text format. JSON is widely used in web applications and APIs, often as a replacement for XML in AJAX systems due to its simplicity and efficiency.

Learn more about JSON from the official JSON documentation .

JSON Syntax

JSON supports two main data structures:

Objects: A set of name-value pairs enclosed in curly braces ({}).
Arrays: A list of values enclosed in square brackets ([]).

JSON defines the following value types: string, number, object, array, true, false, and null.

Here’s an example of JSON data:

      
{
  "firstName": "Duke",
  "lastName": "Java",
  "age": 18,
  "streetAddress": "100 Internet Dr",
  "city": "JavaTown",
  "state": "JA",
  "postalCode": "12345",
  "phoneNumbers": [
    {
      "Mobile": "111-111-1111"
    }, {
      "Home": "222-222-2222"
    }
  ]
}

What is Minification?

Minification is the process of minimizing code and markup in your web pages and script files. It’s one of the main methods used to reduce load times and bandwidth usage on websites. Minification dramatically improves site speed and accessibility, directly translating into a better user experience. It’s also beneficial to users accessing your website through a limited data plan and who would like to save on their bandwidth usage while surfing the web.

Examples

Before minified

      
{
  "colors": [
    {
      "color": "black",
      "category": "hue",
      "type": "primary",
      "code": {
        "rgba": [
          255, 255, 255, 1
        ],
        "hex": "#000"
      }
    }, {
      "color": "white",
      "category": "value",
      "code": {
        "rgba": [
          0, 0, 0, 1
        ],
        "hex": "#FFF"
      }
    }
  ]
}

After minified

      
{"colors":[{"color":"black","category":"hue","type":"primary","code":{"rgba":[255,255,255,1],"hex":"#000"}},{"color":"white","category":"value","code":{"rgba":[0,0,0,1],"hex":"#FFF"}}]}