JSON Unflattener

Convert flat JSON with dot-notation keys back into nested objects.

Input JSON

Unflattened JSON

 
 
  
 
About JSON Unflattener
 

Convert flat JSON back into nested objects with these features:

 
     
  • Convert dot notation keys into nested objects
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  • Customizable key delimiter
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  • Reconstruct arrays from numeric keys
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  • Pretty printing with proper indentation
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  • Copy to clipboard and download results
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  • Preserve all data during unflattening
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