Excel Reader/Writer
View and edit Excel files in your browser.
Excel (XLSX) Viewer & Explorer
View, navigate multiple sheets, and inspect Excel spreadsheets directly in your browser with fixed sliding navigation.
About Excel Reader/Writer
Open .xlsx files online to view the spreadsheet data. Make simple edits and export back to Excel or CSV without needing Microsoft Office.
Your files and data are processed locally in your browser memory. Never uploaded to remote servers.
Instant access with no account, no email sign-up, no passwords, and no subscription paywalls.
Powered by modern WebAssembly and native web APIs for near-instant rendering and zero latency.
Zero data retention, no user tracking cookies, and GDPR/HIPAA friendly. Your data remains strictly yours.
Fully responsive on desktop, tablet, and mobile devices without installing software or extensions.
How to Use
- Upload your .xlsx file.
- View the data in the grid.
- Edit cells if necessary.
- Download as Excel or CSV.