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JavaScript & Browser

Array Transformation Playground

Chain map, filter, sort, reduce, grouping, and projection steps over a JSON array and watch the result update instantly. Your data never leaves the page.

Runs in your browser v1.0.0

Input array

Transformation steps

Steps run top to bottom. Each step transforms the output of the step above it.

    Result

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    How it works
    
        
    
        
    
            
    
                Every step is applied in order with plain JavaScript array logic: filtering by a
                condition, extracting or projecting fields, sorting, de-duplicating, grouping, or
                reducing to a single value. Use dot paths such as customer.name to reach
                nested fields, and field as name in a projection to rename columns.
                Parsing, transforming, and copying all happen in your browser — nothing is uploaded.
            
    
        
    
    
    

    

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