View CSV and XLSX Files Online
Open CSV, XLSX, and Excel files in your browser without installing spreadsheet software. Preview sheets, rows, columns, and share securely with SendNow.
Open CSV or Excel Spreadsheet
Preview tabular data instantly in your browser. Supports .csv, .tsv, and .xlsx.
Direct Answer: How to View CSV and XLSX Files Online
To view a CSV or Excel spreadsheet online, drag and drop your .csv, .tsv, or .xlsx file into the viewer above. The file is processed immediately in your browser memory, rendering an interactive table with instant keyword search and pagination. No Microsoft Excel installation or account registration is required.
Spreadsheet Formats: CSV vs XLSX vs TSV
CSV (Comma-Separated Values) and TSV (Tab-Separated Values) store plain text tabular data. They are universally compatible across databases, programming languages, and business applications. XLSX is a zipped XML format created by Microsoft Excel that preserves cell formatting, formulas, and multiple workbook sheets.
Security Best Practices for Financial Spreadsheets
Financial models, budgets, payroll estimates, and diligence cap tables frequently contain sensitive corporate secrets. When opening spreadsheets online, verify that the viewer runs locally in your browser sandbox rather than transmitting raw data across third-party conversion servers.
Questions About CSV & XLSX Viewer
Need View Analytics, Watermarks, or Access Control?
SendNow lets you share documents via secure, branded links. Get real-time notifications when your files are opened, dynamic recipient watermarks, password gates, and full deal rooms.