Online XLSX Editor With No Cloud Upload
EditDocx opens .xlsx files in the browser with multi-sheet support, formulas, merges, and basic formatting. Import stays local — 0 server uploads — then download the edited workbook as .xlsx.
What works in the spreadsheet editor
Multi-sheet tabs, cell editing, common formulas, merged cells, column widths and row heights, and basic cell styles. Import via drag-and-drop or File → Import.
What stays off the server
Spreadsheet bytes follow the same privacy model as Word files: processing runs in your browser tab. EditDocx does not store workbook content on servers.
Unsupported spreadsheet features
Charts, pivot tables, images, conditional formatting, data validation, and password-protected workbooks are not supported. Use desktop Excel for those cases.
Frequently asked questions
Are .xlsx files uploaded to EditDocx?
No. Spreadsheet editing uses 0 server uploads — same local model as DOCX.
Can I download the edited workbook?
Yes. Download as .xlsx when finished. Word documents can also export PDF.
Do I need a Microsoft Excel license?
No. EditDocx requires 0 installs and 0 accounts.
Open a spreadsheet locally
Drop an .xlsx into the editor and edit without cloud Excel.
Open Editor — It's Free