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#214 · Compare Audit & Reconcile Tool

Excel Before and After Report

Compare a before workbook with an after workbook cell by cell and export a clear CSV report of added, removed, and changed values.

Office File Tool

Two files required
row
rows
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How to use this office tool

  1. Choose the two source files in before-then-after order.
  2. Select the worksheet and review the header-row setting.
  3. Click Build Change Report and provide any requested operation details.
  4. Review the bounded preview and download the newly generated result.

What this tool does

Compare a before workbook with an after workbook cell by cell and export a clear CSV report of added, removed, and changed values.

The first two selected files are matched by sheet name and cell address; formulas and displayed values are compared without recalculating Excel logic.

Keep the original file until you have opened and checked the downloaded result in your preferred spreadsheet application.

Supported formats

XLSX, XLS, CSV, and TSV can be read in the browser. Output is generated as XLSX, CSV, or ZIP according to this operation.

FormatUse
XLSX / XLSWorkbook input
CSV / TSVDelimited table input
Generated resultNew downloadable file

Tips for better results

  • Work from a copy when the workbook contains business-critical records.
  • Check header spelling, identifiers with leading zeros, and date cells after export.
  • Remove passwords before processing; encrypted workbooks cannot be opened here.
  • For very large files, split the source into smaller worksheets first.

FAQ

Does excel before and after report upload my workbook?

No. The selected files are read and processed locally by JavaScript in your browser.

Which spreadsheet formats work with this tool?

XLSX, XLS, CSV, and TSV inputs are accepted where the selected operation applies. The page reports parsing errors instead of claiming a damaged file was processed.

Will formulas and advanced Excel features be preserved?

Basic cell values and formulas are handled, but macros, external links, charts, pivot tables, and application-specific features may not be fully preserved.

Can I use this with large workbooks?

Moderate files work best in a browser. The tool rejects files over 25 MB and limits the on-screen preview so thousands of rows are not inserted into the page.

How should I verify the downloaded result?

Open the output in your spreadsheet application and review a few representative rows, dates, identifiers, and formulas before replacing an original file.

Processing notes

AreaBehavior
PrivacyLocal browser processing
PreviewLimited to 100 rows
ResultNew file blob

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