Yes, JSON Merger is completely free to use with no signup required.

Does JSON Merger send my data to a server?

No. JSON Merger runs entirely in your browser using client-side JavaScript. Your data never leaves your device.

What is JSON Merger used for?

Merge two JSON structures recursively in your browser. Configure overwrite, keep-original, or array-combine rules.

DevTab

Never leaves your browser

Deep merge two JSON objects recursively with custom conflict resolution rules client-side.

Conflict Resolution Strategy:

JSON Object 1

JSON Object 2

Merged JSON Result

JSON Deep MergedStrategy: OVERWRITE