PDF file format is often used in business email correspondence, where keeping formatting of the data is quite important. PDF files are known to be content keepers because they preserve content from unwanted editing and changing. In addition to that, documents are often saved in PDF when you want to be sure that a receiver will perceive the document the same way you see it on your computer, no matter what operating system you use. The problem arises when you want to make additional changes to your PDF. You probably know that there are various PDF conversion tools on the
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