JSON Formatter
Format and beautify JSON with proper indentation and validation. — free, fast and private.
How to use JSON Formatter
- Paste your JSON into the box above.
- Choose your preferred indentation (2 spaces, 4 spaces, tab or compact).
- Click Format JSON to beautify it, or use the compact option to minify it.
- Copy the result or download it as a .json file.
Note: this tool runs in your browser. Nothing is uploaded.
Frequently Asked Questions
What does the JSON Formatter do?
It parses your JSON and reprints it with clean, readable indentation, so nested objects and arrays are easy to read.
What happens if my JSON is invalid?
The tool shows the exact error message from the parser, including the position of the problem where the browser reports it, so you can fix it quickly.
Is my data uploaded to a server?
No. This tool runs entirely in your browser and your input is never uploaded to a server.
Can I use this tool on my phone?
Yes, the tool is fully mobile-friendly and works in any modern browser.