Spreadsheet/CSV Viewer
betaThis free spreadsheet viewer opens Excel, OpenDocument and CSV files right in your browser and shows every sheet as a clean, scrollable table — no Excel, Google Sheets or account needed. The file is read on your device and never uploaded.
Open a spreadsheet (.xlsx, .xls, .ods or .csv) and read every sheet as a table — right here in your browser. Nothing is uploaded.
Excel, OpenDocument and CSV files are all supported. Formulas are shown as their last-saved values.
How to use Spreadsheet/CSV Viewer
- 1 Drop a spreadsheet (.xlsx, .xls, .ods or .csv) — or click to browse.
- 2 It is parsed entirely in your browser; nothing is uploaded.
- 3 Switch between sheets with the tabs and scroll the grid to read your data.
- 4 Column letters and row numbers help you find any cell, just like a spreadsheet app.
Frequently asked questions
Is my spreadsheet uploaded anywhere?
No. The file is parsed and rendered entirely in your browser with JavaScript. It never leaves your device, so it is safe for confidential data.
Which formats are supported?
Modern Excel (.xlsx, .xlsm), older Excel (.xls), OpenDocument spreadsheets (.ods) and CSV files. Multi-sheet workbooks show a tab per sheet.
Are formulas calculated?
Formulas are displayed as their last-saved values (the result stored in the file), not recalculated. This is a fast, read-only viewer, not a spreadsheet editor.
What about very large spreadsheets?
The whole file is read, but to stay fast the grid shows the first 500 rows and 60 columns of each sheet, with a notice when a sheet is larger.