Spreadsheet compare
Compare two spreadsheet, Excel, or CSV files in your browser. Use this when spreadsheet revisions must be traced to the exact sheet, row, column, and cell.
How to use
- Choose Original and Changed, then select Table or Rows comparison.
- Choose a sheet pair and, for Table mode, the header row on each side.
- Compare the workbooks, switch Standard or Formulas and Table or Redline, then filter or navigate changes.
- Download the current comparison as a PDF or a new XLSX without overwriting either source file.
Supported input
Choose one local workbook for Original and one for Changed. The comparison runs in a route Worker.
- XLS, XLSX, XLSM, XLSB, CSV, TSV, TXT, DIF, or ODS
- One local file for Original and one for Changed
What you can create
Review aligned cells in Table or Redline view, with file details, sheet pairs, change navigation, and source addresses.
- Table or Redline comparison with source addresses
- A new PDF or XLSX report
Related tools
Notes and file handling
Choose Table or Rows alignment, inspect sheet, row, column, cell, and formula changes, then download a new PDF or XLSX report.
- Macro code is not executed or copied, and formulas are not recalculated.
- Inputs and file names stay in browser memory and are not sent to a server, analytics, or persistent storage.
- Encrypted, corrupt, unsupported, or resource-heavy files show an error while keeping the selected inputs.
Parsing, comparison, and report creation are local browser work. The selected file bytes, values, formulas, and names do not leave the page.