jsonTools / JSON Merge

Merge nodes from document A into document B, structurally. Everything runs locally in your browser — files are never uploaded.

A: nothing selected → B: nothing selected

A · Source

no file loaded
Open a JSON file
or drop it here

B · Destination

no file loaded
Open a JSON file
or drop it here

Add as property

Choose the key for the new property in the target object.

Resolve conflicts

These keys already exist in the target object. Choose what to do with each one.

Current destination data


		

			
		

	

	

	
		
Edit value

		

		
		

		

			
			
		

	

	
		
Update destination from A

		

		
		

			
			
		

	

	
		
Paste JSON

		
Paste a JSON document to load into . It stays in your browser.