Up until the 2007 version, Microsoft Excel used a proprietary binary file format called Excel Binary File Format (.XLS) as its primary format. Microsoft Excel 2007, along with the other products in the Microsoft Office 2007 suite, introduced new file formats. The first of these (.xlsx) is defined in the Office Open XML (OOXML) specification.
Sometimes you need to filter Excel columns, you can use Withdata DataFileConverter as Excel Columns Filter
Works GREAT in 2025.
Can run in GUI mode, Step by Step, just a few mouse clicks.
Can run in CLI (Command Line Interface), for Scheduled Tasks and Streams, for Automation.
After splitting Excel file in GUI, and Saving "filter Excel" session, then you can:
After filtering Excel columns in Command Line, then you can schedule and automate "filter Excel" conversion task by: