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The Windows software works on the versions of Windows that are supported by Microsoft, which currently is Windows 10.

You can download and install the software for Windows from the following link: https://ketabonline.com/en/apps/windows/download Please note that it can also be installed on an external hard drive as well.

The android app supports Android 8, 9, 10 and 11.

The app works on versions 13 and 14 of the iOS for iPhone and iPad.

The app could be downloaded from Google play through the following link: https://play.google.com/store/apps/details?id=com.ketabonline&hl=en supports Android version 9 and later.

The app could be downloaded from the App Store through the following link: https://apps.apple.com/us/app/id1540068326?l=en supports iOS version 13 and later.

The Windows software could be downloaded from the following link: https://ketabonline.com/en/apps/windows/download Please note that the software could also be installed on an external hard drive as well.

To speed up the search process within the text of books, the Windows program archives the content the first time it is opened, and this process takes about 15 to 60 seconds.

The website can be viewed through the following link: https://ketabonline.com

If you install the program and open it for the first time, you can view all the books through the “Book Store” tab, download the required books, and they will appear in the “My Library” section. If you have created an account in the software previously, you can download again all previously downloaded books by logging into your account in the software and choosing that.

You can download books by installing the Windows software, the iPhone and iPad app, or the Android app. For how to download and manage books, please see the library’s "Tips" section.

In the current version of the Comprehensive Islamic Library for Windows, it is still not possible to add your own books, but the future versions will support this feature, God willing, so that a user’s books that are not a part of the Comprehensive Islamic Library will remain in their own library. For those who wish to have a book included in the Comprehensive Islamic Library to be accessible to all users, may send the book to us to be published in the Library according to the Terms and Conditions found in the website.

Books are reviewed and improved, and new books are added periodically, and this appears as updates to users.

The books in the Comprehensive Islamic Library are provided in two basic formats: Text and PDF, and in the book section, we strive hard to provide PDF files for text books to enable comparison between text to its print version.

Downloading the book from the library for the first time requires internet, but after downloading it, the book could be accessed from the “My Library” section and it will not need to be connected to the Internet.

The Library supports Text, PDF and audiobook (coming-soon) version of books.
• The Text version is the standard version of electronic publishing and a large number of books in the Comprehensive Islamic Library are in this format, which supports searching, copying, coloring and other advanced features used for the books in the Text format.
• PDF version: The Library supports displaying PDF versions of books within the program and the website with basic features such as indexing.
• Audio book: Audiobooks will be supported in the upcoming versions of the Comprehensive Islamic Library, God willing.

With the removal of the app or the Windows software, the downloaded books are also deleted. If you install the application again, you will need to download the books again. However, If you have created an account, you could view the books that you have downloaded previously and download them again.

Some of the Library features are incomplete. Since the Comprehensive Islamic Library is developed periodically, new features and capabilities are added to serve the readers.

If you are an author, translator, publisher, or a book rights holder, please refer to the following link with instructions on how to send and publish books in the Comprehensive Islamic Library: https://ketabonline.com/en/uploadbooks

We at the Comprehensive Islamic Library aim to provide books that are identical to the printed versions and without errors and we review books as much as possible. But due to the large number of books and the fact that checking them requires a lot of time and effort, the user may notice some errors. We welcome your comments at [email protected].

We offer a large number of books, theses and manuscripts for free, but in order to be able to offer you the new printed books too, we will try to reach an agreement with publications to provide their books at nominal prices, since authoring, translation and publishing books have their associated costs.

Most of the library’s features are available to everyone, but registration on the site and the apps provides you with additional features linked to your account, including synchronization between different devices (synchronizing downloaded books, comments, favorites, groups, etc.). Additionally, you can subscribe to the paid package in the future and access paid books too.

To register, please go to the following page and follow the instructions: https://ketabonline.com/en/register

If you registered on the site and did not receive the link to verify your email, please check the spam folder in your mail, and also make sure that you entered your email correctly.

You can create a new password by going to the next page and selecting "Forgot Password", and you will receive a link to set a new password in your email.

Please go to the following link and choose "Edit User Information" and enter the new information.

Each user can access his account through two Android devices, two iOS devices, two computers and the website simultaneously.

To cancel your account and delete your information from the library’s servers, send your request with the reason to the following mail [email protected] and we shall process your request accordingly.

The books available on the Comprehensive Islamic Library are free books obtained from websites, forums, electronic links, and various library programs, and any author or publisher who does not want their books to be in this library can contact us at [email protected] and submitting proof of ownership of the book rights; Additionally, if the rights holder of the book approves, we could include their book in the paid section once the feature becomes available.

Once the paid section of the library becomes available, we can sign a contract with any author or publisher who wishes to sell their books through our library, and may contact us regarding this matter at [email protected].