There are several ebook file formats that may be used by e-readers respectively. It does not matter what sort of file format the ebook is in; the content of the book remains the same, regardless. PDF, which stands for “portable document format,” is a file type that has captured all of the features of a printed document as an electronic image. This image may be seen, navigated, printed, or sent to another person. Adobe Acrobat, Adobe Acrobat Capture, or other comparable software are used in the process of creating PDF files. The free Acrobat Reader, which can be downloaded without much effort, is required in order to view and make use of the files. When you wish to view a PDF file, the reader will begin running immediately after you have downloaded it and installed it on your computer. Additionally, if your ebook has a lot of visuals, they are an excellent fix. Because they are simple to put together and distribute, they are also the format that you should utilize if you have never authored an ebook before. PDF files may be viewed on a variety of devices, including laptops, tablet computers, and even smart phones; however, PDF files do not let the font size to be adjusted on these devices. Epub, which stands for electronic publishing, is the most commonly recognized open and free ebook format. The standard is supported by a variety of popular ebook readers, including Barnes & Noble’s nook, Apple iOS-powered devices like the iPad and iPhone, the Sony Reader, and many more. Only the Amazon Kindle, which is the most popular e-book reader currently available on the market, does not have built-in compatibility for the epub file format. Epub is a file format and standard for ebooks that is open-source. It gives you the ability to alter the size of the font, which enables you to improve the reading experience on desktop computers, smart phones, and tablets. Both of these technologies are beginning to infiltrate each other’s spheres of influence, and it is quite probable that they will steal features from one another. And watch to see what happens when these two technologies continue to develop and compete in the world of e-books, which is fast increasing and has many different aspects.