JSON Merge
Paste two JSON objects to merge them. Second object overwrites first for conflicting keys. Deep merge for nested objects.
JSON Merge
How it works
We parse both inputs and recursively merge: for each key in the second object we overwrite or deep-merge into the first.
When to use it
Use to combine configs or override default JSON with user JSON.
Frequently asked questions
Array handling?
Arrays are replaced entirely by the second object by default.
Deep merge?
Yes. Nested objects are merged recursively.