1.2.EXE file format 3.PDF file format 4. WDL file format 5. PDG file format 6. CEB file format 7. HLP file format 8. NLC file format 9. SWB file format 10. LIT file format 1 1. EBX file format 65438+ type 13. EBK file format 14. TXT file formats There are many common e-books and e-books in different formats. The following briefly introduces several popular and common e-book file formats. 1.Exe file format This is the e-book file format favored by many people at present, and the tools for making this format are also the most. Its biggest feature is easy to read and simple to make. The produced e-book is quite beautiful and can be read without installing a special reader. E-books in this format have low requirements for the running environment. However, this format of e-books also has some shortcomings. For example, EXE files produced by most related production software do not support Flash, Java and common audio and video files, and need the support of IE browser. 2.TXT file format The text document format in computers should be widely used in electronic products now. Now TXT novels are the most common, which can not only be conveniently opened on computers, but also downloaded to MP3 and mobile phones. 3.CHM file format CHM file format is a help file system based on the characteristics of HTML files, which was introduced by Microsoft 1998 to replace the early WinHelp system. In Windows 98, CHM type files are called "compiled HTML help files". The JavaScript, VBScript, ActiveX, Java Applet, Flash, common graphic files (GIF, JPEG, PNG) and audio and video files (MID, WAV, AVI) supported by IE browser are also supported by CHM, and can be linked to the Internet through URL. 4.HLP file format HLP file format is a help file system used by early operating systems. This format does not require much for the reader's operating system, and Windows 95 and later versions can run. At present, the help files of many software running on Windows platform are almost in HLP format. Of course, with the introduction of Microsoft CHM help file system and the development of operating system, HLP file format is likely to be replaced by CHM. The disadvantage of HLP file format is that it is not beautiful enough. Because many people now put forward higher requirements for the aesthetics of e-books, e-books in this format are not very popular on the Internet at present. But what is certain is that this format of e-books is simple to make and easy to obtain, and has no special requirements for readers. In addition, many software help files are still using this format, so this format will not quit the historical stage in a short time. 5.pdf file format PDF file format is an electronic reading file format developed by Adobe Company in the United States. This file format e-book needs the company's PDF file reader Adobe Acrobat Reader to read, so readers are required to install this reader on their computers. This reader is completely free and can be downloaded from Adobe's website. The advantages of PDF are beautiful appearance, convenient browsing and high security. However, this format does not support various HTML-based technologies such as CSS, Flash, Java and JavaScript, and is only suitable for browsing static e-books. E-books in PDF format can be made and edited by Adobe Acrobat, and the latest version is 4.0. 6.WDL file format (WDL is an electronic reading file format developed by Beijing Kang Hua Company, which is currently used by many large electronic publications in China. Its characteristic is that the original layout is well preserved, and e-books can be read online or downloaded locally, but they need to be read by the company's special reader DynaDoc for free, and can be downloaded from the company's website for free. This format of e-books properly protects the interests of authors and publishers due to the restrictions on printing and reproduction. Like PDF format, this format still does not support some of the above effects. But it supports image import. This format deals well with the balance between the text quality of file images and the final product size, and the compression rate of files using this format is generally high. E-books of all sizes are good choices. Making e-books in this format requires the company's software DynaDoc generator. There is no * * * version of the software at present. Readers can go to the company's website to find information about the software. 7.SWB file format SWB format is a relatively rare electronic reading file format. It is the software WinEbook.