You should know the difference between EPUB, MOBI, AZW and PDF eBook Formats.

EPUB

The EPUB format is probably the most common of all the formats and is widely supported across all platforms. Most eReaders like Apple’s iBooks, Barnes & Noble’s Nook, Adobe Digital Editions, Aldiko on Android among others (nearly 300) support .epub files.

**epub has different DRM protection :

  • iBook has FairPlay DRM – can’t remove drm
  • Adobe Digital Editions DRM – can remove drm
  • Barnes & Noble’s DRM – Partial ebook can remove drm

The EPUB format is an open standard. That means it is free and publicly available though there are specific rules for its usage. The EPUB standard is maintained by the International Digital Publishing Forum (IDPF), a global trade and standards organization.

MOBI

The Mobipocket ebook format is another open standard for eBook publishing. It was bought by Amazon. It is also cross-platform. eBooks in this format can have the .prc or .mobi extension.

MOBI formats can take complex content, include advanced navigation controls, supports indexing and a high degree of compression. For instance, readers can add their own pages, freehand drawings, annotations, highlights, bookmarks, corrections, and notes if devices support it. It can also include a dictionary. MOBI formats are suited for smaller screens because the image size limitation of 64K. The image size and image format (GIF) puts the format at odds with larger display devices like tablets.

MOBI can also display reflowable content and fixed width layout.

**mobi ebook DRM can remove.

AZW

AZW is a proprietary format developed by Amazon specifically for the Kindle eBook reader. It has its roots in the MOBI format but has better compression and encryption apart from a few more changes. The AZW format has found its place in many platforms with Kindle reading apps apart from Kindle. But AZW files can only be obtained from the Amazon online bookstore.

AZW format is DRM (Digital Rights Management) restricted and is locked to the device id which is registered automatically with the user account of the Kindle purchaser. But DRM free books also carry the AZW extension but they are really no different from MOBI files.

**azw ebook DRM can remove.

PDF

Adobe’s pet format – the Portable Document Format or PDF is one of the oldest eBook formats and the most used. It was made open from 2001. The PDF format supports fixed width layout and reflowable content. Because of their commonness, many tools exist to create, edit, and secure PDF documents. For instance, you can easily convert webpages to PDF and keep them archived.

PDF files can be digitally signed and securely locked against editing and this has also promoted there use along with the fact that they are viewable and printable on virtually any platform. PDF format is preferred because PDF files preserve the original layout of any document which has any type of data – text, drawings, multimedia, video, 3D, maps, full-color graphics, photos, and even business logic.
Conclusion

Multiple formats can confuse us. But the good thing is that tools exist that can help us convert PDF to EPUB, MOBI or HTML or convert PDF for Kindle readers. We hope this basic guide has helped to give you an understanding of all the popular eBook formats out there. Which one do you use most often.

**Adobe digital editions PDF DRM can remove.

How to remove Adobe Digital Editions DRM ?

PDF ePub DRM Removal is tools to remove ADEPT DRM protectio from PDF/ePub ebooks, it create a new ebook file without DRM limitation, support text select/copy function and keep origin ebook file without change. user can view PDF ePub ebook on iPad, NOOK, Sony Reader, Kobo or other device without DRM limitation, user also can print Digital Edition ebook. read it in Kindle after convert new ebook to .mobi format.

1 Download and install PDF ePub DRM removal.

2 Download and install Adobe digital edtions, download here,

authorize computer in digital editions .

3 if your ebook is .acsm file, then open it in Digital Edition, the real ebook file will download.
if you download ebook file not in digital edition, you need to open ebook in digital editions, click “Library” button and select “Add Item to Library ” in digital editions, then ebook will import into ADE.

4 Run PDF ePub drm removal, select ebook file to decrypt, click “Digital editions” button to import ebook files.

normally for ebook download in digital editions,
it is in “My documents\My Digital editons” for windows,
for Mac, it is “~/documents/Digital editons”

user also click “Open” button to open digital editions folder, drag drop epub file into converter window.

5 Click “Remove” button, it will remove drm and create a PDF/epub file if no error happen.

6 You can convert PDF/epub to other format in Calibre, you should delete origin ebook in Calibre first before add new ebook file into it.

this is online video :
youtube video

ePub eBook

EPUB is a free and open e-book standard by the International Digital Publishing Forum (IDPF). Files have the extension .epub.

EPUB is designed for reflowable content, meaning that the text display can be optimized for the particular display device used by the reader of the EPUB-formatted book. The format is meant to function as a single format that publishers and conversion houses can use in-house, as well as for distribution and sale.


How to copy PDF ebook to ipad?

How do you get those PDFs onto the iPad, and how do you then access them within iBooks?

You can do it like music or video files.

Open up iTunes and plug in your iPad. Now simply drag and drop the PDF file into the top left portion of the iTunes main window:

Connect iPad to itune.

Now go to the “Books” area and you’ll see the PDF file shows up:

As with other content, you’ll want to check “Sync Books”, then most likely also choose “Selected books”, then make sure that the check box is marked adjacent to each and every PDF you want to have on your computer. Click “Sync”.

Now the fun part: once the sync is done, launch “iBooks”. You’ll see your PDF file on the bookshelf:

Tip: If you don’t see it, note that on the top left you can choose between “Books” and “PDFs”. Make sure you have PDF selected…

Tap on the PDF file, reading ….