Tools / JSON Formatter

JSON Formatter

Format, validate, minify, sort, and inspect JSON locally in your browser.

Browser local Strict parser Tree inspector
Validation Ready
Input

Paste JSON

Output

Formatted result

No output Line - / Column - 

            

        


        

            

                Size
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                Keys
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                Depth
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                Type
                -
            

            

                Arrays
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                Values
                0
            

            

                Lines
                0
            

            

                Mode
                -
            

        


        

            

                

                    Inspector
                    
JSON tree

                

                

                    
                    
                    
                

            

            
Valid JSON will appear here.

        

    






    

        

            

                About this tool
                
Free JSON formatter, validator, beautifier, and minifier

                
TechMamba JSON Formatter helps developers, testers, analysts, and API teams format JSON, validate syntax, minify payloads, sort keys, inspect nested data, and download clean JSON files.

                
The formatter runs locally in your browser, so pasted JSON is not uploaded to TechMamba servers. This makes it useful for API debugging, configuration review, webhook payload inspection, and structured data cleanup.

            

            
        


        

            
JSON Formatter FAQ

            

                What is a JSON formatter?
                
A JSON formatter turns compact or hard-to-read JSON into an indented, readable structure while preserving the original data.

            

            

                What is the difference between formatting and minifying JSON?
                
Formatting adds indentation and line breaks for readability. Minifying removes extra whitespace to create a smaller JSON payload.

            

            

                Is my JSON private?
                
Yes. This tool uses browser-side JavaScript, so your JSON is processed locally in your browser.

            

            

                Why is my JSON invalid?
                
Common causes include trailing commas, single quotes, unquoted property names, missing brackets, and comments, which strict JSON does not allow.

            

            

                Does sorting JSON keys change the data?
                
Sorting changes object key order for easier comparison but does not change the values. Array item order is preserved.