Online Excel Viewer & Editor
Open Excel workbooks directly in your browser with SheetJS. Switch between worksheets, edit cells inline, and explore your data without installing desktop software.
Drag and drop your Excel file here
Supports .xlsx, .xlsm, .xlsb, .xls, .ods, .csv files up to 50MB
Quick start
- 1
Upload an Excel file
Drag and drop or browse for an .xlsx, .xlsm, .xls, or .ods workbook.
- 2
Review sheet previews
Switch between worksheets and inspect rows and columns instantly.
- 3
Edit cells inline
Update cell values directly in the spreadsheet-style grid.
- 4
Download your changes
Save the edited workbook as .xlsx, or export the current sheet as CSV.
Data stays on your device
Workbook parsing and preview rendering happen locally in your browser.
Quickly inspect spreadsheet data without opening desktop apps. This tool provides fast worksheet previews and inline editing for common analysis and QA workflows.
50 MB
Max file size
100,000
Max preview rows
200
Max preview columns
Multi-Sheet Workbook Support
Browse every worksheet in a workbook with smooth tab switching.
Inline Grid Editing
Update values directly inside a familiar spreadsheet-like interface.
Large Sheet Support
Scroll through up to 100,000 rows per sheet without slowing down the page.
Sample Workbook Mode
Load demo data instantly to test the viewer before uploading your own files.
What Excel formats are supported?
The viewer opens .xlsx, .xlsm, .xlsb, and .xls Excel workbooks, OpenDocument .ods spreadsheets, and .csv files. Workbooks are parsed with SheetJS in your browser.
Is there a file size limit?
Yes. The current upload limit is 50MB to keep parsing responsive in-browser.
Why are some rows or columns truncated?
Each sheet shows up to 100,000 rows (fewer for very wide sheets) and 200 columns. Larger sheets are cut off so the browser stays responsive.
Can I save my edits?
Yes. Download .xlsx saves every sheet with your edited values. Formulas and cell formatting are not kept, only the values you see.
Is my spreadsheet uploaded to a server?
No. Workbook parsing and table rendering happen locally in your browser.