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Microsoft Excel is one of the most popular spreadsheet software professionals and students use. However, Excel files are only sometimes convenient to share and use. The proprietary .xls and .xlsx formats are not readable on all devices without having Excel installed. To make your Excel files more portable and universally accessible, saving them as PDFs is recommended. PDF or Portable Document Format preserves all the formatting, tables, images, and layout of your Excel sheets. At the same time, PDFs are independent of the software used to create them.