JSON Formatter
Format, validate, and minify JSON instantly. 100% free and private - all processing happens in your browser.
Instant Validation
Automatically validates JSON and shows clear error messages with line numbers.
100% Private
All formatting happens in your browser. Your JSON never leaves your device.
Easy Export
Copy to clipboard or download formatted and minified JSON files.
Frequently Asked Questions
How do I format JSON?
Simply paste your JSON into the text area. The tool will automatically validate and format it with proper indentation. You can choose between 2 or 4 space indentation.
How do I know if my JSON is valid?
The tool automatically validates your JSON as you paste it. You'll see a green checkmark for valid JSON or a red X with an error message for invalid JSON.
Can I minify JSON?
Yes! Once you paste valid JSON, you'll see both formatted and minified versions. The minified version removes all whitespace for compact storage.
Is my JSON data private?
Absolutely. All formatting and validation happens in your browser. Your JSON never gets sent to any server, ensuring complete privacy.
Can I download the formatted JSON?
Yes! You can download both the formatted and minified versions as .json files using the download buttons.