XLS is a very handy format when one needs to store data in rows and columns, while also having the possibility to integrate charts and diagrams.
However, XLS files require specialized applications in order to be accessed, therefore users often convert them to other formats (like PDF, CSV or TXT) that can be opened with a wider range of utilities.
When converting Excel spreadsheets to text documents, the source files will be stripped of any graphics, and will retain only the text data.
Users will have the possibility to process several files at the same time or to convert each spreadsheet or workbook separately.