JSON Formatter & Validator
Paste raw or minified JSON to format, validate, or minify it. All processing happens in your browser.
Output will appear here...
About the JSON Formatter
This tool uses the browser's native JSON.parse() and JSON.stringify() — the same engine that powers every JavaScript runtime. No data leaves your machine.
What each action does
| Action | Description |
|---|---|
| Format | Parses and re-serializes with indentation for human readability |
| Minify | Removes all whitespace to produce the smallest possible JSON string |
| Validate | Checks if the input is valid JSON and reports any syntax errors |
Want to learn more about JSON structure and best practices? Read our JSON formatting best practices guide.