DEVDESK / GUIDE
JSON Formatter — Usage guide
Use this free online JSON formatter to validate JSON syntax, format indentation, or minify JSON. Processing runs in your browser, so your input is not sent to a server.
How to use it
- Paste JSON or load a sample.
- Choose two or four spaces for indentation.
- Beautify, minify, or validate, then copy or download the result.
Input and output examples
Example 1
Input
{"name":"DevDesk","active":true,"count":3}Output
{
"name": "DevDesk",
"active": true,
"count": 3
}Example 2
Input
[1,true,null]Output
[
1,
true,
null
]Frequently asked questions
Can JSON contain comments?
No. Standard JSON does not define comments, so comments and trailing commas produce validation errors.
Are error line and column numbers exact?
The tool extracts a location when the browser parser provides one. Browser message differences mean some errors use a general message.
Is my JSON sent to a server?
No. Conversion runs in your browser and the input is not sent to a DevDesk conversion server.