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Comparing two versions of a CSV file cell by cell is tedious and error-prone. Upload both files and this tool highlights every difference — added rows, deleted rows, and changed values — in a color-coded side-by-side view.
See exactly what changed between two exports of the same dataset.
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Upload last month's and this month's price lists, key on product SKU, and instantly see which prices changed, which products were added, and which were discontinued.
The comparator aligns rows by a key column you select (or by row position if no key exists) and then diffs every cell. Added rows appear in green, deleted rows in red, and changed cells are highlighted with both the old and new values visible. Summary statistics show the total number of additions, deletions, and modifications.
For large files, you can filter the view to show only changed rows, only additions, or only deletions. The diff is exportable as a CSV with a "change type" column so you can process differences programmatically.
The tool reports added and removed columns separately and compares only the columns present in both files.
Yes. Select a unique key column (like an ID) and the tool matches rows by that value regardless of row order.
Added rows are highlighted in green and deleted rows in red in the side-by-side view. Changed cells show both old and new values.
All processing happens directly in your browser. Your files never leave your device and are never uploaded to any server.