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Excel Viewer

Workbook preview

Choose an .xlsx workbook up to 10 MB. Older .xls files are not supported. Processing stays in your browser.

Select a workbook to inspect its worksheets in a scrollable table.

How to use Excel Viewer

  1. Choose an .xlsx workbook from your device.
  2. Switch between worksheet tabs when the file contains multiple sheets.
  3. Scroll across the table to inspect cell values locally.

Privacy and limits

Your file is read locally by your browser and is not uploaded to Function Key. Preview is limited to files up to 10 MB, 1,000 rows, and 100 columns so a large file cannot freeze the page.

Common questions

Is my Excel file uploaded?

No. The workbook is unzipped and read in your browser, and its contents are not sent to Function Key.

Can it open old .xls files?

Not currently. Save an older .xls workbook as .xlsx first, then open the new copy in this viewer.