Guides & Tutorials

Master Large Spreadsheets

Learn how to split, optimize, and share multi-megabyte Excel and CSV files efficiently.

How to Split an Excel File into Multiple Files (Online & Free)

Step-by-step guide to splitting large Excel (.xlsx, .xls) files by parts, rows, file size, or column values with zero data loss.

Overcome file size limitations when emailing large spreadsheets or sending Excel workbooks over WhatsApp.

Techniques for splitting multi-million row CSV files without running out of RAM or dealing with software crashes.

Discover the top reasons your Excel workbook is unexpectedly large and how to reduce file size without losing data.