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.

Usually, there are dedicated applications to view different types of files. However, if you are looking for a viewer that lets you view files of multiple types, you have come to the right article.

What happens when you want to edit a Microsoft Excel .xlsx file on a Mac, iPhone or iPad? While it’s not quite as easy as opening .docx files in Pages for Mac, it’s not an overly complicated process ...

New Outlook fails to open Excel attachments with non-ASCII characters in filenames, and shows an error. Microsoft recommends using Outlook on the web or downloading ...