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dotXLSOpen Workspace

Compare Excel Worksheets

Compare two Excel worksheets by key and identify added, removed, modified, and unchanged records.

Import a multi-sheet XLSX workbook, choose old and new worksheets, define key and comparison columns, then create a separate Comparison worksheet.

Paste Data

Copy cells from Excel or Google Sheets and paste them here.

Import a spreadsheet file

Import CSV or XLSX data into the current dotXLS workspace. Files are processed in your browser.

Tools

Import an XLSX workbook with at least two worksheets. Source worksheets remain unchanged; Apply creates a separate Comparison worksheet.

Compare Excel Worksheets
Key column(s)

Import a multi-sheet XLSX workbook first.

Columns to compare

Choose worksheets first.

Duplicate key values are reported explicitly and are never silently matched.

Undo and Redo controls are available with the current grid.

Paste spreadsheet data to create your workspace.

Name	Department	Amount
Ahmed	Sales	1200
Maria	HR	950

Your data stays in this browser tab and is not sent to WordPress.

Export result

Download the current workspace data after editing or cleaning.