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Compare two files and see
exactly what changed

Compare, edit, sync and export right in your browser. Your files stay on your computer and are never uploaded.

Start comparing Try it with sample files

Works with Excel (.xlsx, .xls) and CSV spreadsheets today · Free, no sign-up

Left September 2026.xlsx
IDNameAmount
001Alice100
002Bob200
004Dave400
Right October 2026.xlsx
IDNameAmount
001Alice100
002Bob250
006Frank600

Your files stay on your computer

Reading, comparing, editing and exporting all happen in your browser. Nothing is uploaded or stored, so it is safe for payroll sheets, customer lists and other private files.

More than a diff

Edit cells, copy or sync content from one side to the other, then export a new file. Every step can be undone.

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Spreadsheet comparison

Compare two Excel or CSV files

Rows are paired automatically by key columns such as ID, and every cell that differs is highlighted, even when rows are in a different order or a column was added. With many columns, show only the columns that differ, or open row details to compare one row column by column.

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