Data & Diagnostics
XLSX Data Viewer
Open and inspect Excel workbooks privately in your browser. View all sheets, search, sort, filter, and export to CSV. No upload — your files never leave your device.
Drag and drop your XLSX file here
or use one of the options below
Processed locally in your browser. No upload, no server.
View every sheet
Inspect all worksheets, including hidden sheets, with full cell data and formulas.
Browser-local privacy
Files never leave your device. No upload, no tracking, no account required.
Free & Pro
FreeView, search, sort, filter, and CSV export are free. Advanced exports require Pro.