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Indulge yourself into learning more about well-known document and image file formats.
Files with XLS extension represent Excel Binary File Format. Such files can be created by Microsoft Excel as well as other similar spreadsheet programs such as OpenOffice Calc or Apple Numbers. File saved by Excel are known as Workbook where each workbook can have one or more worksheets. Data is stored and displayed to users in table format in worksheet and can span numeric values, text data, formulas, external data connections, images and charts.
We support a variety of document, web and e-book file formats, including PDF, DOC, DOCX, RTF, ODT and many more.