It is divided into PC e-book format and mobile e-book format. PC e-book formats include EXE, TXT, HTML, HLP, etc. , and mobile e-book formats include UMD, JAR, etc.

PC e-book format:

1 and EXE can be opened directly after downloading, without installing a special reader. Click on the directory to open the required content directly, while the PDF needs to be turned page by page.

2.TXT is an extension of notebook computer and should be widely used in electronic products. Now TXT novels are the most common, which can not only be conveniently opened on computers, but also downloaded to MP3 and mobile phones. There are many TXT novel websites on the Internet now. For example, the famous wandering bookstore is a professional TXT format novel download website, which can easily download your own mobile phone or MP3, saving a lot of money for books.

3.HTML web page format, which can be opened directly with a web browser;

4.HLP help file format, which can be opened directly on Windows; Generally, you can open it by pressing F 1 in the program.

5.CHM, like HLP file format, is also a help file, but it supports a variety of video and audio formats, making e-books more vivid and beautiful.

6, LIT Microsoft file format, you need to download Microsoft reader software to read.

7.PDF PDF is an e-book file format developed by ADOBE, which is the most popular e-book format at present. It can truly reflect the format, font, layout and pictures in the original document, and ensure that the printing effect of the document is not distorted.

8.WDL This is the file format of Beijing Kang Hua Company, which is also widely used. You can open WDL and WDF formats with DynaDoc free reading software.

9.CEB is an e-book format independently developed by Peking University Founder Company. Due to the adoption of "high fidelity" technology in the file conversion process, CEB e-book format can maintain its original style to the maximum extent.

10, ABM is a brand-new digital publishing format. The biggest advantage of this format is that it can combine text content with pictures, audio and even video animation into an organic whole. When reading, it can bring all-round enjoyment in vision and hearing.

1 1.PDG Superstar Company scanned these books and stored them in PDG digital format, which was stored in Superstar Digital Library. If you want to read these books, you must use a superstar reader. After installing the reader, open the superstar reader and click "Resources". We can see the classification of books according to different themes. After classification, every specific book is presented to us.

12, EPUB EPUB is an electronic book or other digital publication based on XML format, which is a standard formulated by the International Digital Publishing Forum (IDPF), a business and standard association of digital publishing industry. In June 2007, IDPF officially adopted EPUB, and it was quickly adopted by mainstream publishers and equipment manufacturers. There are various open source or commercial reading software to support almost all mainstream operating systems. Electronic publications in EPUB format can be read on electronic ink devices such as Sony PRS or small devices such as Apple iPhone.

Mobile e-book format:

1, UMD is originally an e-book format supported by Nokia's mobile phone operating system. To read e-books in this format, you need to install relevant software on your mobile phone. However, many java mobile phones can also watch it after downloading reading software.

2.JAR JAR file format is based on the popular ZIP file format. Different from ZIP files, JAR files are not only used for compression and publishing, but also for deploying and encapsulating libraries, components and plug-ins, which can be directly used by compilers, JVMs and other tools. JAR contains some special files, such as manifest and deployment descriptor, which are used to instruct tools how to deal with a specific JAR.

Which e-book format is the best:

Txt e-books, in fact, are electronic texts without any processing, and are the simplest display texts. Their codes are divided into ansi, unicode, unicode big endian and utf-8, which can be browsed normally in the computer. In our computers, ansi codes are commonly used, but mobile phones are different. Mobile phones generally default to unicode coding, and garbled codes will appear if the coding is not recognized. Of course, with the gradual development of mobile phones, this situation will be improved. In short, txt e-books are the easiest to make. When you "save" electronic materials with regular encoding, you can change the encoding to unicode encoding.

Exe e-book, which is one of the most complicated e-book formats to make, is also the most beautiful and practical. The process is to first split the content text in txt format into multiple TXT texts according to chapters, and then make an html collection (page illustration and e-book cover) respectively, and finally make an e-book file with suffix. Exe packages software through e-books.

Pdf e-books, generally made by Foxit pdf editor, are basically divided into two types: one is the text version, and the other is to directly copy the full text of paper books into pictures, and then assemble them into pdf e-books.

Jar ebook, in fact, is to transcode the txt electronic text into unicod code, and then use the mobile phone ebook production software to improve the functional practicability again, which is basically equivalent to the upgraded version of txt ebook.

Advantages and disadvantages of various e-books

Advantages of txt e-books: small size, the original carrier of all kinds of e-books, disadvantages: no function, unsightly.

Advantages of exe e-book: beautiful, multi-functional, chapter catalogue, page scrolling, neat typesetting, no need for any reading software. Disadvantages: the size of txt is relatively large, so it can't be read on mobile phones at present.

Advantages of pdf e-books: intuitive, with chapter contents, average aesthetics and average functions. It is very convenient to add comments (labels, words, pictures, etc.). ) using ADOBE ACROBAT PROFESSIONAL software. Disadvantages: among all e-book formats, pdf e-books are the largest and cannot be read on mobile phones.

Advantages of jar e-books: Compared with txt, the bookmark splitting function is added. Disadvantages: it is limited to viewing on mobile phones, and its size is slightly larger than txt format, so it cannot be viewed on computers.

Advantages of epub e-book: there is a chapter catalogue, the text display size is optional, the typesetting is free, and it is suitable for proportional screen reading. Disadvantages: When used on a PC, the size is slightly larger than the txt format, so you can't add comments, but if you just read it, epub is a good choice considering the file size.