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What is JSON Formatter?
JSON Formatter is a free online tool that helps developers format, validate, and beautify JSON data. 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.
How to Use JSON Formatter
- Paste your JSON - Copy and paste your JSON data into the input area
- Automatic validation - The tool automatically validates your JSON and shows any errors
- Choose format - Click "Prettify" for readable formatting or "Minify" for compact output
- Copy result - Use the copy button to copy the formatted JSON to your clipboard
JSON Formatter Features
- Real-time validation - Instantly validates JSON syntax as you type
- Error highlighting - Shows exact line and column numbers for errors
- Prettify mode - Formats JSON with proper indentation and line breaks
- Minify mode - Removes whitespace for production-ready JSON
- Auto-save - Your input is automatically saved to local storage
- One-click copy - Copy formatted output with a single click
Frequently Asked Questions
What is JSON?
JSON (JavaScript Object Notation) is a lightweight, text-based data format that is easy for humans to read and write and easy for machines to parse and generate. It's commonly used for data transmission between web servers and applications.
Is my data secure?
Yes, all processing happens in your browser. Your JSON data is never sent to any server, ensuring complete privacy and security.
Can I format large JSON files?
Yes, the tool can handle JSON files of substantial size. However, for very large files (multiple megabytes), you might experience some performance impact depending on your device.
Does it support all JSON types?
Yes, the formatter supports all valid JSON data types including objects, arrays, strings, numbers, booleans, and null values.