MuhammadLab

Merge JSON Files

Merge multiple JSON inputs with a chosen strategy (deep merge, concat arrays, or overwrite).

Fast processing • Browser-based • Easy copy and download

Workspace
Paste data, upload a file, and produce clean output instantly.
Paste multiple JSON values separated by ---.
Input
Output

Processed Locally

Your file never leaves your device. Everything is processed in your browser — we never see or store your data.

Frequently Asked Questions