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JSON Formatter & Validator
Paste your JSON and format it with customizable indentation or minify it. Our validator highlights syntax errors instantly. All processing happens in your browser.
How to use JSON Formatter & Validator
- 1Paste your input in the panel above or use the example data if available.
- 2Choose an action — format, generate, convert, encode, or analyze.
- 3Your result appears instantly. Use Copy to grab it, or Download if a file option is shown.
Runs entirely in your browser
Nothing you type, paste, generate, or upload leaves your device.
Frequently asked questions
Is my JSON data sent to a server?
No. All processing happens locally in your browser. Your data never leaves your device.
What is JSON formatting?
JSON formatting adds proper indentation and spacing to make JSON human-readable. Minifying does the opposite, removing all unnecessary whitespace.