JSON To CSON Online Converter

This online JSON To CSON converter is a free, fast, and secure tool that helps you instantly convert JSON data into CoffeeScript Object Notation (CSON) format directly in your browser. No installation, no server upload, and no setup—just paste, type, or upload JSON, click convert, and get instant results.

Key features

  • Dual editor interface for input and output
  • Supports write, paste, upload, and drag & drop
  • Instant JSON to CSON conversion
  • Clear, copy, and download output options
  • Runs entirely in your browser, no installation required
  • Secure and private—no data leaves your device

How to use the JSON To CSON converter

  1. Enter or paste your JSON data into the left editor, or upload a JSON file.
  2. Click the Convert JSON button to generate CSON instantly.
  3. Copy, clear, or download the converted CSON from the right editor.

Example 1: Simple JSON to CSON Conversion

JSON Input

Copy
{
    "name": "John Doe",
    "age": 30,
    "city": "New York",
    "interests": [
        "reading",
        "hiking",
        "coding"
    ],
    "contact": {
        "email": "john.doe@example.com",
        "phone": "123-456-7890"
    },
    "isAdmin": false,
    "score": 85.5,
    "address": "123 Main St"
}

CSON Output

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name: 'John Doe'
age: 30
city: 'New York'
interests: ['reading', 'hiking', 'coding']
contact:
	email: 'john.doe@example.com'
	phone: '123-456-7890'
isAdmin: false
score: 85.5
address: '123 Main St'

Example 2: Nested JSON to CSON Conversion

JSON Input

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{
	"library": {
		"name": "Downtown Public Library",
		"location": "Main Street",
		"catalog": {
			"categories": [
				{
					"genre": "Fiction",
					"books": [
						{
							"title": "The Midnight Tale",
							"author": "L. Harper",
							"published": 2018
						}
					]
				},
				{
					"genre": "Non-Fiction",
					"books": [
						{
							"title": "The Art of Focus",
							"author": "S. Patel",
							"published": 2019
						}
					]
				}
			]
		}
	}
}

CSON Output

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library:
	name: 'Downtown Public Library'
	location: 'Main Street'
	catalog:
		categories: [
			{
				genre: 'Fiction'
				books: [
					{
						title: 'The Midnight Tale'
						author: 'L. Harper'
						published: 2018
					}
				]
			}
			{
				genre: 'Non-Fiction'
				books: [
					{
						title: 'The Art of Focus'
						author: 'S. Patel'
						published: 2019
					}
				]
			}
		]

Why use this JSON To CSON converter

This online tool is built for developers who prefer CoffeeScript Object Notation (CSON) for configuration files and project data. It runs instantly in the browser without requiring setup, ensuring your data stays private while delivering quick results.

Advantages of the tool

  • Speed: Convert JSON to CSON instantly.
  • Simplicity: Easy-to-use interface for any skill level.
  • Accessibility: Works on all browsers and devices.
  • Security: Conversion happens locally, no server needed.
  • Free: 100% free and unlimited usage.

Customization Options

You can tailor the JSON to CSON output with multiple customization options for formatting and structure.

OptionDefaultDescription
Indent Size4Spaces per indentation level.
Use TabsTrueIndent lines with tab characters.
Sort KeysFalseAlphabetically order object keys.
Compact Arrays []TrueKeep short arrays on one line.
Compact Objects {}FalseKeep small objects on one line.
Shorten URLsEmptyStrip base URL from links.
Specify Date KeysEmptyDefine JSON keys with dates.
Date FormatDefaultChoose custom date formatting.
Wrap Length0Set max characters per line.
Ending With NewlineFalseAdd newline at file end.
Drop Nulls / EmptyFalseOmit empty or null values.
Exclude KeysEmptyRemove specific keys from output.

Conclusion

Use the JSON To CSON online converter for a lightweight, secure, and instant way to transform JSON into CSON. With its dual editor, customizable output options, and free access, this tool is perfect for developers working with CoffeeScript-based projects, configuration files, or data-driven applications.