JSON Formatter
Format and beautify JSON data with proper indentation. Free online JSON formatter, validator, and pretty printer for developers.
How it works
- Paste your JSON — it validates and formats automatically
- Invalid JSON shows error details with line/column position
- Choose 2 or 4 space indentation
- Copy or download the formatted result
How to Use
- Paste your JSON data into the input field
- Select your preferred indentation level (2 or 4 spaces)
- Your JSON is automatically formatted and validated
- Copy or download the formatted output
Example
Input
{"name":"John","age":30}Output
{
"name": "John",
"age": 30
}FAQ
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data interchange format that's easy for humans to read and machines to parse. It's the most popular format for APIs and configuration files.
Does this validate JSON?
Yes! The formatter validates your JSON syntax and shows detailed error messages with line numbers if there are any issues.
Is my data secure?
Yes, all processing happens in your browser. Your data is never sent to any server - it stays completely private.
What indentation options are available?
You can choose between 2 spaces or 4 spaces for indentation. Both are common standards in software development.
Can I format minified JSON?
Absolutely! This tool is perfect for making minified or compressed JSON readable with proper indentation and line breaks.