JSON Formatter Pro
A fast, free online tool to format, beautify, minify, and validate your JSON data. Perfect for developers, data analysts, and anyone working with JSON files.
Why use JSON Formatter Pro?
- Instantly format and validate your JSON data
- Identify and fix syntax errors with clear error messages
- Minify JSON for production use or storage optimization
- Upload and download JSON files directly from your device
- All processing happens locally - your data never leaves your browser
Input JSON
Result
Keyboard Shortcuts
JSON Basics
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data interchange format that's easy for humans to read and write and easy for machines to parse and generate. It's based on a subset of JavaScript language and is language-independent.
JSON supports these data types:
- Strings:
"Hello, World!" - Numbers:
42, 3.14159 - Booleans:
true, false - Null:
null - Arrays:
["apple", "banana", "orange"] - Objects:
{ "name": "John", "age": 30 }
Common JSON Mistakes
- Missing commas: Forgetting to separate values with commas
- Trailing commas: Adding an extra comma after the last element
- Unquoted property names: Property names must be in double quotes
- Single quotes: Using single quotes instead of double quotes
- Comments: JSON doesn't support comments
Example of valid JSON:
{
"name": "John",
"age": 30,
"isEmployed": true,
"hobbies": [
"reading",
"hiking",
"coding"
],
"address": {
"city": "New York",
"zip": "10001"
}
}Pro Tip
Use our JSON formatter to instantly validate your JSON and ensure it follows proper formatting rules. This is especially useful when debugging or when you need to understand the structure of complex JSON data.
Frequently Asked Questions
What does JSON formatting do?
JSON formatting adds proper indentation and line breaks to make JSON data more readable for humans. This is especially useful when debugging or when you need to understand the structure of complex JSON data.
Why would I minify JSON?
Minifying JSON removes all unnecessary whitespace, making the data more compact. This is useful for reducing file size for storage or transmission, especially in web applications where bandwidth matters.
Is this tool secure? Is my data safe?
Yes! This JSON formatter processes all data locally in your browser. Your JSON data is never sent to our servers, ensuring complete privacy and security for sensitive information.