Scissor Office

Open and edit an XLSX spreadsheet in your browser

Spreadsheets in Scissor Office opens XLSX files, the format Microsoft Excel saves by default, and recalculates their formulas in your browser. A spreadsheet engine written in Rust and WebAssembly does the work in a background worker, so the file is not uploaded.

Open an XLSX fileHow it works

How to edit an XLSX file

  1. Open the app, press Open file and choose the .xlsx file. Every sheet opens, each in its own tab.
  2. Edit cells and formulas in the formula bar, which suggests functions and shows their arguments as you type.
  3. Sort A to Z or Z to A, add a Filter, freeze rows and columns, find and replace, or select cells and Insert chart.
  4. Press Save to write the XLSX back, or Save as… for ODS, flat ODS (FODS), CSV or tab-separated values.

What an XLSX keeps

Part of the workbookIn Scissor Office
Values, formulas and their resultsKept, recalculated as you edit
Number formats, fonts, fills, borders and alignmentKept and editable
Several sheets, column widths, row heights, hidden rows and columns, frozen panesKept and editable
Charts: column, bar, line, area, pie, doughnut, scatter and combinationsKept and editable
Drawings, comments, merged cells, conditional formats, data validation, pivot tablesKept when saved back to XLSX, not editable yet
Macros in .xlsm filesNot kept: Save writes a copy as .xlsx
.xlsb files and Excel 4.0 or earlierNot opened

Formulas

Over 300 functions are recalculated by the spreadsheet engine, using calculation code from IronCalc. The status bar shows the sum, average and count of the selected cells. A sheet can hold up to 1,048,576 rows and 16,384 columns.

Charts from your cells

Select the cells with your data and their headings and choose Insert chart. Each preview in the gallery uses your own data. Charts are saved in XLSX and ODS, and a file's own charts of these kinds open editable.

Private by design

The workbook is read and written in your browser tab and kept in this browser's storage on your device. Google Sheets files open from your own Google Drive as XLSX if you choose Open from Google Drive, and you can save back to Drive as XLSX or ODS.

Limits to know

  • Files protected with a password cannot be opened yet.
  • There is no live co-editing; you exchange the file.
  • Clearing this site's data in your browser deletes the copies kept here, so save the files you want to keep.

Want to see for yourself that nothing is uploaded? How it works shows how to check in your browser's Network tab.

Questions and answers

Do formulas recalculate?

Yes. Over 300 functions are recalculated as you edit, in a background worker in your browser.

Are pivot tables kept?

Yes, when you save back to XLSX. They cannot be edited or refreshed in Scissor Office yet.

How big can a sheet be?

Up to 1,048,576 rows and 16,384 columns per sheet, the same grid size as XLSX.

Can I open Google Sheets files?

Yes. Choose Open from Google Drive and a Google Sheets file opens as XLSX.

Does it open old .xls files?

Yes. Excel 97–2003 .xls files open with their values, formulas and formatting and are saved as XLSX or ODS.

Is my spreadsheet uploaded?

No. It is read, calculated and written inside your browser tab.

Related guides

Open an XLSX file

Microsoft Word, Excel and PowerPoint are trademarks of Microsoft Corporation. Pages, Numbers and Keynote are trademarks of Apple Inc. LibreOffice is a trademark of The Document Foundation. Google Docs is a trademark of Google LLC. Scissor Office is independent and not affiliated with, endorsed by or connected to any of them. File formats are named only to say what Scissor Office can open and save.