JSON formatter
Format or minify JSON and see exactly where invalid input breaks.
Indent
Input
Output
Output will appear here
About this tool
Paste any JSON to instantly validate and beautify it. If the JSON is invalid, you get the exact line and column of the error so you can fix it quickly. You can switch the indentation or minify the output to a single line.
Frequently asked questions
- What does beautify do?
- It re-indents your JSON with consistent spacing so it is easy to read. Minify does the opposite: it strips all whitespace to produce the smallest valid JSON.
- Is my JSON sent to a server?
- No. All validation and formatting happen entirely in your browser — nothing you paste ever leaves your device.