JSON Diff / Compare

Compare two JSON documents and visualize every difference.

100% Browser-Based

Files Never Leave Your Device

No Server Uploads

Zero Data Collection

How It Works

Enter the original JSON on the left and modified JSON on the right

Click Compare to compute the structural diff

See additions, deletions, and changes highlighted with paths

Recursively compares nested objects and arrays

Color-coded diff entries — green for added, red for removed, amber for changed

Shows the exact JSON path of each difference

Swap left and right, or copy the full diff report

Does it compare arrays by index or value?

Arrays are compared by index position. Element at index 0 on the left is compared to index 0 on the right.

Can I compare large JSON files?

Yes. The comparison runs entirely in your browser and handles large documents efficiently.