JSON formatter
Free online JSON formatter: beautify, minify, sort keys, escape and unescape in one click, with line-and-column error locations, copy and download. Processed locally in your browser — your data never leaves.
Features
- Beautify, minify, sort keys, escape and unescape in one click
- Syntax errors located precisely by line and column
- Choose indentation, wrap lines, copy and download
- Processed locally in your browser, no data upload
How to use
- Paste or type your JSON
- Choose an action (format / minify / escape etc.)
- Set indentation and sorting options
- Review the result and copy or download the .json
FAQ
What is JSON formatting for?
It expands minified JSON into an indented, readable layout so you can inspect the structure and find problems quickly.
Does validation show the error location?
Yes — on failure it points to the exact line and column, so you can fix it fast.
Is my data uploaded to a server?
No — everything runs locally in your browser, so your JSON never leaves your device.