JSON Formatter

Format and beautify your JSON data with proper indentation.


    

  

  

    
    
    
    
  

  


    

    

      
ToolsSoup's JSON Formatter is a free online tool that instantly formats, beautifies, and validates JSON right in your browser. Paste minified or messy JSON and get clean, properly indented output in a single click — no uploads, no sign-up, and nothing ever leaves your device.

      

        
What is a JSON formatter?

        
A JSON formatter — also called a JSON beautifier or pretty printer — takes raw JSON and rewrites it with consistent indentation and line breaks so it is easy for people to read. It also parses your data, so invalid JSON is caught right away with a clear error message. Developers reach for it to debug API responses, inspect configuration files, and tidy up data copied from logs.

        
      

      

        
How to format JSON online

        
Formatting JSON with ToolsSoup takes just a few seconds:

        
  1. Paste your JSON into the input box on the left.
  2. Click Format to pretty-print it with 2-space indentation, or Minify to compress it onto a single line.
  3. Copy the result with one click, or fix any error shown below the editor.

      

      

        
Why use this JSON formatter?

        
  • 100% free with no ads, sign-up, or usage limits.
  • Runs entirely in your browser — your data is never uploaded to a server.
  • Instant formatting and minification for JSON of any size.
  • Clear, human-readable error messages for invalid JSON.
  • Works offline once the page has loaded.

      

      

        
Frequently asked questions

        

          
Is this JSON formatter free?

          
Yes. Every tool on ToolsSoup is completely free to use, with no account, sign-up, or hidden limits.

        

        

          
Is my JSON data safe?

          
Absolutely. All formatting happens locally in your browser using JavaScript, so your JSON is never sent to or stored on any server.

        

        

          
What is the difference between formatting and minifying JSON?

          
Formatting (beautifying) adds indentation and line breaks to make JSON readable, while minifying removes every unnecessary character to make the file as small as possible — handy for production and for reducing payload size.

        

        

          
Why am I getting an 'Invalid JSON' error?

          
The formatter follows the strict JSON standard. Common causes are trailing commas, single quotes instead of double quotes, missing brackets, or unquoted keys. Fix the highlighted issue and try again.

        

        

          
Can I format large JSON files?

          
Yes. Because everything runs on your own device, you can format large JSON documents quickly with no upload limits, though very large files will depend on your browser's available memory.