Merge
Json
Merge two or more JSON documents with deep merge, array strategies and a conflict report.
🔒 100% client-side.
Your JSON is merged in your browser. Nothing is uploaded, sent to a server or stored.
Merge options
Merge mode
Deep merge (recursive)
Shallow merge (top-level keys)
Arrays
Concatenate
Concatenate (unique)
Replace
Merge by index
On conflict
Last input wins
First input wins
Output indent
2 spaces
4 spaces
Tab
Minified
Ignore null values
Sort keys A→Z
+ Add input
📂 Load .json files
Load example
Clear
Merged result
Copy result