JSON Formatter
Format, beautify and validate JSON data instantly.
How to Use JSON Formatter
- Paste your raw or minified JSON data into the left input panel.
- Click 'Format / Beautify' to pretty-print your JSON with proper indentation, or 'Minify JSON' to compress it.
- If your JSON has syntax errors, you'll see a clear error message with details. Copy the formatted output when ready.
About JSON Formatter
The JSON Formatter is a powerful tool for developers who work with JSON data daily. It validates, formats (beautifies), and minifies JSON with a single click. Paste any JSON — from API responses, configuration files, database exports, or log outputs — and instantly get clean, properly indented output. The validator catches syntax errors like missing commas, unclosed brackets, and invalid values, displaying clear error messages to help you debug quickly. Choose between 2-space, 4-space, or 8-space indentation to match your project's code style. The minify feature removes all whitespace to produce the most compact JSON possible, perfect for reducing payload sizes. All processing happens client-side in your browser, so your sensitive API keys and data never leave your device.
Frequently Asked Questions
What types of JSON errors can this detect?
The formatter detects all JSON syntax errors including missing or extra commas, unclosed brackets and braces, unquoted property names, single quotes instead of double quotes, trailing commas, and invalid escape sequences.
Can I format large JSON files?
Yes! The tool handles large JSON files efficiently since processing happens in your browser. For files over 10MB, performance depends on your device, but typical API responses and config files are processed instantly.
What's the difference between format and minify?
Format (beautify) adds proper indentation and line breaks to make JSON human-readable. Minify does the opposite — it removes all unnecessary whitespace to produce the smallest possible output, reducing file size for production use.
Is my JSON data secure?
Completely secure. The JSON Formatter processes everything locally in your browser. No data is ever sent to any server, making it safe for formatting JSON containing API keys, tokens, or sensitive configuration.