Free JS Object Merging Utility

Merging nested JavaScript objects is a pain.
Object.assign does a shallow merge. Spread syntax overwrites nested keys. You end up writing custom recursion logic every time.
I built a free tool that solves this.
What it does:
- Deep merges two nested objects
- Lets you control array concatenation
- Handles key collisions
- Shows the result side-by-side
Use cases:
- Combining API responses
- Merging config objects
- Debugging nested state updates
- Comparing object structures
Privacy:
100% client-side. Nothing uploaded.
Try it: tools.kandz.me/object-merger
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