JSON Formatter & Validator

JSON Formatter & Validator

The JSON Formatter & Validator is an essential tool for developers working with APIs, configuration files, and data storage. Raw JSON typically comes "minified" (one long line) to save space, which makes it impossible to read. This tool instantly formats it into a structured, easy-to-read layout.

What is a JSON Formatter?

A JSON Formatter (also called JSON Beautifier or Pretty Printer) takes compact, minified JSON data and formats it with proper indentation and line breaks. This makes complex data structures readable and easier to debug. It also validates JSON syntax, catching errors like missing commas, unquoted keys, or mismatched brackets.

Why use a JSON Formatter? When working with APIs, config files, or databases, JSON is often compressed to a single line for efficiency. This makes it impossible to read or debug. A formatter instantly structures the data, while validation ensures your JSON is syntactically correct before deploying to production.

How to use

1. Input: Type/paste JSON, or upload a .json file.
2. Beautify: Click "Beautify" to format with proper indentation.
3. Validate: Check the status indicator for errors.
4. Minify: (Optional) Click "Minify" to compress back to one line.
5. Save: Click "Copy" or "Download" to save the result.

Example - Beautify JSON

{
    "name": "John Doe",
    "age": 30,
    "email": "john@example.com",
    "address": {
        "street": "123 Main St",
        "city": "New York",
        "country": "USA"
    },
    "skills": [
        "JavaScript",
        "React",
        "Node.js"
    ],
    "isActive": true
}

What is valid JSON?

• Keys must be enclosed in double quotes (e.g., "key", not 'key' or key).
• Strings must use double quotes. Single quotes are not allowed in standard JSON.
• Trailing commas are not allowed (e.g., [1, 2,] is invalid).