JSON Formatter

Format, minify and validate JSON right in your browser. Paste your JSON, choose an action — the result appears instantly and never leaves your device.


        

          
          
        

        

      

    

    

      
How to format JSON online

      
Paste your JSON into the input field and click Format to pretty-print it with indentation, or Minify to remove all whitespace. Use Validate to check whether the JSON syntax is correct — the tool shows the first error it finds.

      
Why use a JSON formatter?

      
Compact JSON is hard to read and debug. A formatter makes objects and arrays scannable, helps you spot missing commas or brackets, and minification reduces payload size before you send data over the network.

      
Frequently asked questions

      
Is my JSON uploaded to a server?
No. Everything runs locally in your browser, so your data stays on your device.

      
Does the formatter support large JSON?
Yes, you can format JSON files of any reasonable size directly in the browser.

      
Can I download the formatted result?
Yes — copy the output to your clipboard or download it as a .json file.