PDF (Portable Document Format) is a versatile electronic document format. It was initiated by Adobe and was originally intended for electronic presentation of printed materials. Hence, the tasks of this format follow - storing information about the color scheme and the arrangement of elements, as well as ensuring identical output on different monitors and printers. PDF documents can be opened using the free version of Adobe Reader or a web plug-in that is available for most Internet browsers. In some browsers, in particular, in Google Chrome, this format is supported even without the plugin installed. You can edit PDF files using the paid version of Adobe Reader. Also, there are a huge number of programs for both opening and working with this format, and for converting to other formats.
To support the formatting capabilities of a text document, an RTF format has been developed. The RTF format belongs to the text category. Full name - Rich Text Format File. The .rtf extension helps to adapt text for programs. A document with the .rtf extension is opened in any text editor that supports the formatting option. To be able to edit a document, you need to know how to open an rtf file. Such documents contain multimedia information, including tables and images. This format has been defined by Microsoft as a standard format for the exchange of text documents. Consequently, this format is similar in purpose to the SYLK format for spreadsheets. RTF is supported by many Microsoft products. So, for example, starting from version 2.0, it was introduced in Windows as a Clipboard format, which makes it possible to exchange data between various Windows application programs. In addition, the RT format is supported by WORD for Macintosh from version 3.X and WORD for PC from version 4.X.