TXT is one of the simplest and longest existing text file formats. The full name of the format is Plain Text File, and the developer is unknown. Text files of this format are very small, and therefore have become very widespread. A TXT file contains text data organized as strings. As a rule, this is a standard text document without formatting. This format is universal, it is available to work in almost any text editor. But one of the simplest and most common is Windows Notepad. Files with the extension .txt are associated with this program by default.
RTF is one of the most common text formats that has a long history. After all, it was developed back in 1982 at Microsoft. The name of the format is an abbreviation of the English Rich Text Format File. Compared to DOC, this is a more universal format that can be used by almost any, even the simplest, text editors. Another of its features is the ability to transfer text between different programs, if the operating system provides the function of export / import of RTF files. Users also appreciate RTF for the fact that such a document can only contain text, without additional heavy macros.