Format · Minify · Line-precise validation · Data never leaves the browser
About this tool
How to use
- Paste your JSON into the input box.
- Click Format (2/4-space indent), Minify, or Validate.
- Errors point to the exact line and column; when valid, copy or download the result.
Features
- Format, minify, and validate in one place
- Errors pinpointed to line and column
- Selectable indent (2/4)
- One-click copy and download
- Everything computed locally in your browser
Privacy
Your JSON never leaves the browser — no server, no analytics.
FAQ
Is my data safe?
Yes — processing happens locally in your browser and nothing is uploaded.
Can it locate errors?
Yes, errors are reported down to the line and column.
Is there a size limit?
It depends on your browser's memory; everyday files are no problem.