XLS files are Excel workbook files created in Excel 97 or Excel 2003. The 2007, 2010 and 2013 versions of the program use the XLSX format by default to save workbooks, but can also use the XLS format.

Businesses that switch to Mac computers may encounter problems when attempting to open some file types, such as Excel Spreadsheet (XLS) files. Macs do not have a native program for opening XLS files, ...

How to convert XLS and JSON files to CSV in Linux with csvkit Your email has been sent Sometimes you just need a quick means of converting a spreadsheet to a comma-separated values file. When you ...

When you double-click on a file in Windows, it will automatically open a default program that is configured to manage these types of files. It is common, though, want or need to use a different ...

While it is technically possible to open an Excel file in Notepad, this is not a good idea. Excel files are binary files that contain complex formatting and data structures. When you open an Excel ...

The xls file should open as a Spreadsheet. This doesn't happen with all XLS files, just some. Unfortunately, I cannot share the example file this happens with. Excel warns me that the file format and ...