JSON Formatter & Validator — Convert JSON to C# Classes

Pretty-print, minify and validate JSON. Generate C# model classes from your JSON instantly.


        


        

          
          
        

      

    


    

    
  





            
    
    
    



    
GuideHow to Format and Validate JSON and XML
Find common JSON and XML syntax errors, format nested data, and interpret parser feedback.

    Read guide →


    


        
        

        
        

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Frequently asked questions

        

                

                    What does a JSON formatter change?
                    
It changes whitespace and indentation to make valid JSON easier to read without changing the represented data.

                

                

                    Why is my JSON invalid?
                    
Common causes include trailing commas, single-quoted strings, unescaped characters, or missing braces and brackets.

                

                

                    Does minifying JSON remove data?
                    
No. Minification removes unnecessary whitespace while preserving keys, values, arrays, and objects.

                

                

                    Can the tool generate C# classes?
                    
Yes. The conversion option infers a C# model structure from valid JSON; review inferred types when values can be null or vary between records.