What is JSON?
JSON (JavaScript Object Notation) is a lightweight data interchange format. It's easy for humans to read and write, and easy for machines to parse and generate. JSON is commonly used for APIs, configuration files, and data storage.
JSON Formatter & Validator
Format, validate, minify JSON online. Convert between JSON, CSV, and XML formats. Free, fast, and works completely offline.
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Input JSON
Ready
Output
Options
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How to Use JSON Formatter
How do I format JSON online?
Simply paste your JSON into the input field and click "Format". The tool automatically adds proper indentation, line breaks, and spacing to make your JSON readable. You can choose between 2 spaces, 4 spaces, or tab indentation.
How to convert JSON to CSV?
Paste your JSON array into the input, select "CSV" from the output format dropdown, and click Format. The tool converts JSON arrays of objects to CSV format with headers automatically extracted from the object keys.
Is my JSON data secure?
Yes, 100%. All JSON processing happens in your browser using JavaScript. Your data never leaves your device. We don't send, store, or log any of your input data. This tool works completely offline once loaded.
What's the difference between minify and beautify?
Beautify/Format adds whitespace, indentation, and line breaks to make JSON human-readable. Minify removes all unnecessary whitespace to reduce file size - useful for production APIs and faster data transfer.