How to use JSON Formatter On Line
- Start by adding the JSON you want to format into JSON Formatter On Line.
- Set Indent so the output fits your use case.
- Press Format and JSON Formatter On Line shows the result straight away.
- When it looks right, Copy to save it.
About this tool
Everything JSON Formatter On Line does happens on your own device. JSON Formatter On Line parses JSON entirely in your browser, so large or deeply nested documents stay on your device.
Clear error positions help you find a stray comma or bracket quickly. Your input never leaves the page, and no account or install is required.
Frequently asked questions
How do I use JSON Formatter On Line?
JSON Formatter On Line runs entirely on your device: add your input using the Indent control, and it formats it locally in real time.
Does JSON Formatter On Line cost anything?
No — JSON Formatter On Line is completely free, with no sign-up and no hidden limits.
Is my input private in JSON Formatter On Line?
Yes — your input never leaves your device; JSON Formatter On Line does all the work in your browser.
Can JSON Formatter On Line handle large or deeply nested JSON?
Yes. JSON Formatter On Line parses JSON entirely in your browser, so large or nested documents stay on your device and never upload.
Does JSON Formatter On Line work offline?
Once the page has loaded, JSON Formatter On Line keeps working with no network connection.