JSON Formatter - Format, Validate & Minify JSON
Format, validate, and minify JSON data online. Free JSON formatter tool with syntax validation and error detection.
How This Tool Works
This tool helps you format, validate, and minify JSON data. Paste your JSON into the input field and choose to format it with proper indentation for readability, minify it to remove whitespace for production use, or simply validate it to check for syntax errors. All processing happens in your browser, ensuring your data remains private.
Why Use This Tool
- ✓Format JSON with proper indentation
- ✓Minify JSON to reduce file size
- ✓Validate JSON syntax and find errors
- ✓Clear error messages for debugging
- ✓Completely client-side - your data stays private
- ✓Perfect for developers and API testing
Frequently Asked Questions
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 widely used in web APIs and configuration files.
Why format JSON?
Formatted JSON with proper indentation and line breaks is much easier to read and debug. It helps developers quickly understand the structure of data, especially when working with complex nested objects and arrays.
When should I minify JSON?
Minify JSON when you need to reduce file size for production use, API responses, or when storing JSON data. Minified JSON removes unnecessary whitespace, making it more compact but harder to read.
Is my JSON data secure?
Yes! All JSON processing happens entirely in your browser. Your data is never sent to any server or stored anywhere. The tool is completely client-side for maximum privacy.
What are common JSON errors?
Common JSON errors include missing commas, trailing commas, unquoted keys, single quotes instead of double quotes, and unclosed brackets or braces. This tool will help you identify and locate these errors.