How to use JSON Editor
- Type or paste your JSON into JSON Editor's input area.
- Use the Indent setting to control the result.
- Click Format to process it instantly in your browser.
- When it looks right, Copy to save it.
About this tool
Everything JSON Editor does happens on your own device. JSON Editor validates and reshapes your JSON locally with no server round-trip.
Because parsing is local, sensitive payloads never leave the page. It behaves the same on desktop and mobile, with nothing stored remotely.
Frequently asked questions
How do I use JSON Editor?
Use JSON Editor to process your input without installing anything using the Indent control; everything happens client-side.
Does JSON Editor cost anything?
No — JSON Editor is completely free, with no sign-up and no hidden limits.
Where is my data processed by JSON Editor?
Entirely in your browser — JSON Editor keeps your data on your own machine and sends nothing anywhere.
Can JSON Editor handle large or deeply nested JSON?
Yes. JSON Editor parses JSON entirely in your browser, so large or nested documents stay on your device and never upload.
Does JSON Editor work offline?
Once the page has loaded, JSON Editor keeps working with no network connection.