SheetSure · Help

Compare worksheets, fill selected fields and validate data locally in your browser.

Get started

Install the extension and click its toolbar icon to open the workspace.
Click Load example or choose your own .xlsx or .xls files.
Select worksheets and header rows, then configure keys, mappings or validation fields.
Inspect the results and export. Data fill requires a preview and exports a new workbook.

Language

The workspace follows your browser language initially. Use Language to choose English, 简体中文 or Browser language. The current session is saved before the page reloads. Workbook headers and data keep their original text.

Unexpected comparison results

Check worksheets, header ranges, key columns, filters, comparison types and tolerances. Empty and duplicate keys require review. Formulas use cached results. Recalculate and save the file in Excel before opening it here.

Data fill

Confirm the source and target, then choose at least one fill field. Keys are optional. With no key, rows match in nonempty row order. Key-based filling updates matched target rows only and does not append source-only records. Export may not fully preserve images, charts or complex formatting. Keep the original and inspect the output.

Field validation

Field ordering requires at least two distinct fields. Empty-value checks can use one field. Zero counts as nonempty. Empty values, invalid numbers and different explicit currencies require review in numeric ordering checks.

Restoration and deletion

Wait for the local-save confirmation before closing the tab. Reopen the same extension to restore files and settings and recalculate results. Uninstalling or clearing extension storage removes saved local data. Export anything you want to keep first.

Support

marcosyang183@gmail.com

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