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Top 5 Free AI PDF Book Readers with the Best Experience in 2024

eBooks are rapidly replacing traditional printed books in today's digital world. These latest forms of documents are lightweight, portable, and secured as well considering that they are in the form of a PDF file type, making them a convenient alternative to taking with you wherever you go. In addition, there are also certain software applications like PDF book readers which you can download on your desktops or phones to access.

Meanwhile, finding the finest PDF eBook reader, on the other hand, might be difficult if you are unaware of key factors such as operating system compatibility, PDF format, and so on. Fortunately, this article will find you invaluable help to give a list of the best PDF ebook readers to choose from so you will have maximum satisfaction in your book reading.

Top 5 Free PDF Book Readers to Be the Bookworm Enjoying Your Time

1. UPDF - The Best AI-Enhanced PDF Editor

Starting ahead of the finest list of PDF ebook reader applications that you deserve on all your devices is the UPDF. Made available to every type of device may it be your Windows or Mac desktops or even IOS or Android, this PDF reader guarantees you will have the greatest book reading experience and recognize yourself as a bookworm living the best time of your life as this app offers an explicitly unique yet elegant interface. Download it to enjoy the extraordinary eBook reading experience!

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Some apps could not read images and other unique elements found on ebooks but the UPDF does not know that kind of flaw as it is integrated with an advanced OCR feature that makes sure you get the other half of what you are expecting. It can also convert scanned PDFs to searchable and editable PDF files. This can help you to easily edit PDF books.

There is no limit to the number of ebooks or PDF files you can read or open with the UPDF you are also able to highlight and save important texts found on each page with the annotation and editing tool as well. Efficiency-wise, you are entitled to savor that maximum enjoyment as you read ebooks as well as edit PDF files.

UPDF also carefully prepared a dark mode on the Mac and iOS versions. When you read PDF books in the dark, dark mode will better protect your eyes and provide a comfortable reading environment. No eye strain due to excessive stress. There are also multiple slideshow modes, allowing you to better immerse yourself in PDF books.

pdf ebook reader dark mode updf


  • Great reading experience with multiple viewing modes to display PDF books.
  • AI features to assist your reading and understanding of the book.
  • Smooth page navigation and bookmarking feature.
  • Simple and user-friendly interface with easy access.

Other Features:

  • Edit PDF documents easily.
  • Easily add header and footer to PDF book.
  • Print PDF documents like a booklet.
  • Allows you to add bookmarks while you are reading PDFs.
  • Make annotations and comments to PDF documents.
  • Manage and organize PDF book pages
  • OCR scanned and image-baed PDFs into searchable and editable PDFs.
  • Convert PDF files into other formats, such as Word, Excel, etc.

After learning all the introductions of this best PDF eBook reader, you can give it a try now!

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2. MuPDF

MuPDF is a lightweight open-source PDF, XPS, and digital book reader or viewer. It's the mix-up tool of the graphical user interface and command line interface. It's a little bit difficult to use compared to other PDF readers. But that doesn't mean you can't view your eBooks on MuPDF reader. MuPDF is only supported on Windows and Android devices.

mupdf reader pdf ebook reader


  • It's a lightweight application
  • Supported different software libraries and command-line tools


  • Beginners may face difficulties while using it.

3. Javelin PDF Reader

Javelin PDF Reader is another tool to view your eBooks and other documents. Unlike MuPDF, it's available on both Windows and Mac operating systems. Javelin is a straightforward and easy-to-use PDF reader. You can also do minor editing such as annotation, bookmarking, commenting, and highlighting text. However, it doesn't support any advanced editing features. It's good to go product for reading/viewing purposes.

pdf ebook reader Javelin


  • A simple and straightforward tool


  • It doesn't have advanced editing features

4. iBooks

Another one on the list of the best app to read PDF books is Apple's very own iBooks app. This PDF eBook reader is both free and simple to use. The books may be purchased straight from the application. Its user interface resembles a contemporary bookshelf with nicely organized volumes. Users may change how bright or dark the website is, as well as the font size of their choosing, in the page layout. The user may also select the reading mode and theme. It has a night mode option, which allows you to view the website in black with white lettering for easy viewing.

pdf book reader app ibooks

Page flipping may also be done by swiping your finger over the screen, simulating the movement of a real book. Bookmarks are also available to help you remember where you left off. When you close the book and reopen it, it will automatically open to the bookmarked page.


  • Elegantly designed interface
  • Customizable modes for reading.


  • May only be available to Apple platforms and devices.

5. Kobo Books

Last but not least PDF book reader app is known to have rivaled Amazon's Kindle the majority of users appraise. The smart software is available for a variety of platforms, including PC, iOS, and Android, and, like many other solutions, it contains useful features and functions you can utilize in a very quick manner. Functions include being able to change the font sizes, utilize a built-in dictionary, highlight text as well, and more. There is also a specific day-night mode for reading in varied lighting conditions.

e book reader pdf kobo books

The interface of Kobo is made simpler than the conventional PDF readers making it a premiere competitor for most PDF reading software you can have while the program also has sync capabilities integrated where it will allow you to continue reading where you left off on different devices without missing a page. Lastly, the app is not only limited to opening PDF file types for books but also EPUB, PDF, CBZ, and CBR are among the formats supported by the software.


  • Customizable reading display.
  • Can sync between devices and multiple platforms(Phone to desktop).


  • Does not support every file format to open.

A Quick Guide to Selecting Which PDF ebook Reader to Use

Comparing the Top 5 PDF Book Readers with the Best Experience

Everyone wants the best PDF reader with an excellent reading experience in the digital world. Luckily, there are tons of PDF book readers available. But not all of them provide the best reading/viewing experience. The following table chart will definitely help you to pick the best experience PDF reader and we recommend you choose UPDF.

ToolPricingOperating SystemKey FeaturesReading ExperienceRating
UPDFFree to Read PDFs (You can also upgrade to Pro to use advanced features)Windows, Mac, iOS, AndroidZoom in/out, Page Thumbnails, Single-Page-View, Single-Page-Scrolling, Two-Page-View, Two-Page-Scrolling, Bookmarking, Editing, Annotating, Converting, Organizing, Encrypting, OCR, and AI-integrationExcellent4.8
MuPDFFree to Read PDFsWindows, AndroidViewing PDFsGreat4.4
Javelin PDF Reader Free to Read PDFsWindows, Mac, LinuxViewing PDFs, Bookmarking, AnnotatingGood4.4
iBooksFree to Read PDFsMac, iPhone, iPadDifferent page view, Bookmarks, Zoom in/outGreat4.5
Kobo BooksFree to Read PDFsWindows, Mac, Android, iOSBookmark content, Search by word/character, Different View ModesGood4.5

No doubt, UPDF is bossing the comparison table chart from all aspects. UPDF has every right to be at the top because of its tremendous reading experience. Moreover, it's available on your smartphones as well. You can easily download it on your phone and enjoy the flow of reading eBooks.


Many people utilize the eBook and PDF reader that came with their mobile device, but for those who want to do their own research and discover a better alternative, these options are worth considering if you want to find the best one there. So make sure to consider a PDF reader that is multi-platform-capable, and integrated with the latest and lesser tools to help you navigate and smoothly scroll down the pages. To cut the premiere guide short is to use UPDF- a versatile app that not only stops giving you a great reading experience but also provides you with all there is to have for managing PDF files. Get it now and begin to read your PDF eBooks!

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