Format, validate, and beautify JSON data instantly. View as tree or raw text.
JSON formatting (or beautifying) adds proper indentation and line breaks to compressed JSON data, making it easier to read and debug.
Yes. Our JSON formatter validates your JSON in real-time as you type, instantly showing syntax errors with line numbers.
No. All JSON formatting, validation, and tree view processing happens entirely in your browser. Your data never leaves your device.
Yes. Use the JSON → YAML or JSON → CSV buttons to convert your data. You can also convert YAML back to JSON with the YAML → JSON button.
You can format JSON files up to 5 MB. You can also upload .json, .yaml, or .csv files directly using the Upload button.