What Is EPUB File Format? How to Open and Convert EPUB Files?

This article will explain what an EPUB file is, how to open it on all your devices, and how to convert EPUB to different formats that can be used in e-book readers.

what is epub file

What is EPUB file format?

EPUB file is an abbreviation for electronic publication, which is an open-access e-book file format. You can download EPUB files and read them on your smartphone, tablet, e-book reader or computer.

Compared to any other file format, this e-book standard gives you the freedom to use it and supports more hardware e-book readers.

EPUB 3.2 is the latest version of the EPUB format, which supports the latest versions of HTML, CSS and SVG, as well as built-in interactive features, audio and video support technologies.

If you are looking for free downloadable EPUB eBooks, don’t forget that there are many online resources that offer free eBooks, such as Open Library.

How do I open an EPUB file?

Most e-book readers can open EPUB files, including B&N’s Nook, Rakuten’s Kobo e-book reader, and the Apple Books app. To use EPUB files on Amazon Kindle, you must first convert them.

You can also open EPUB files on your computer with various free programs, such as Calibre, Adobe Digital Editions, Apple Books, EPUB File Reader, Stanza Desktop, Okular, and Sumatra PDF.

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In addition to the above-mentioned software, Mac users can also choose Readium to read EPUB files.

Browsers such as Firefox and Chrome also have add-ons and extensions that can be installed to allow you to read EPUB files in your browser, just like any other file.

As an example, there is EPUBReader for Firefox and Simple EPUB Reader for Chrome.

Next is Google Play Books, where you can upload EPUB files to your Google account and then view them through your web client to open them.

Since the structure of EPUB files is the same as ZIP files, you can rename the EPUB eBooks by replacing “.epub” with “.zip” and open the files with a good file decompression program.

The EPUB file format also supports embedded files, such as GIF, PNG, JPG and SVG images.

How to convert EPUB files?

There are various ways to convert EPUB files as follows.

Calibre, a premium software, can convert EPUB files to other formats, back and forth among most other e-book formats, including those compatible with Amazon Kindle. Some of the formats that support EPUB conversion include FB2, HTML, LIT, LRT, MOBI, PDF, PDB, RTF, TXT, and SNB.

Zamzar is another noteworthy EPUB conversion tool online. You can use the website to convert it to PDF, TXT, FB2, and other similar text formats.

Using Online eBook Converter, you can also convert EPUB files to AZW or PDF files.

Although it is not as efficient as Calibre or other online conversion tools, you can also try to open EPUB files with other eBook readers and choose to save the opened files or export them to another file format to convert them.

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Still can’t open EPUB files?

One of the most common errors when opening unfamiliar file types is misreading the file extensions. Although the file extensions of different file formats are different, they are sometimes similar and can be very confusing when you try to open or convert them.

EPM or EBM files are also very confusing. Whether the EBM file refers to an Extra Basic Macro file or an Embla recording file, neither is an e-book format. The first one can be opened through Micro Focus, and the second one is for Embla RemLogic software.

Frequently Asked Questions about EPUB files

How to open EPUB files in Windows system?

In Windows 10, Microsoft Edge supports displaying EPUB files. To set Microsoft Edge as the default program to open EPUB files, right-click File > Open File with Other Programs > Microsoft Edge.

Another way is to download and open Calibre > Add Books > Add Files to Library > Browse.

How to open EPUB files in Adobe Reader?

Adobe Acrobat Reader is only for software that is used to browse and print files. You can use Adobe Digital Editions to browse PDF and EPUB files on Windows or Mac operating systems.

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