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JSON Formatter
Format, validate, and beautify JSON data with syntax highlighting
What is JSON Formatter?
Our free online JSON formatter lets you paste raw or minified JSON and instantly format it with proper indentation. It also validates your JSON structure, highlights syntax errors with clear messages, and can minify formatted JSON for production use. Choose between 2-space, 4-space, or tab indentation. All processing runs entirely in your browser — your data never leaves your device.
How to Use JSON Formatter
- 1Paste your JSON data into the input field on the left
- 2Select your preferred indentation level (2 spaces, 4 spaces, or tab)
- 3Click 'Format' to beautify or 'Minify' to compress your JSON
- 4Review the output on the right and click 'Copy' to copy it to your clipboard
Frequently Asked Questions
JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate. It is widely used in web APIs, configuration files, and data storage.
Paste your raw or minified JSON into the input field, select your preferred indentation (2 spaces, 4 spaces, or tab), and click the Format button. The formatted JSON will appear instantly in the output panel.
Yes. When you click Format or Minify, the tool automatically validates your JSON. If the JSON is invalid, a clear error message will show you exactly what went wrong and where the syntax error is located.
Absolutely. All processing happens locally in your browser using JavaScript. Your JSON data is never sent to any server, making this tool completely safe for sensitive or proprietary data.
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