HomeHelp for BSON Books Viewer

To use the BSON Books Viewer, the first step is to import book content into a database (also called "library") located on your desktops or mobile devices. The Viewer can then display book content from the local database and allows you to bookmark, highlight, annotate and search even without internet connection.

Import Books Into Library

There are two ways you can add (import) books into the database for offline reading.

  1. From the Cloud:

    Within the Viewer for Style L, click Image at the top left of the Viewer. For Style s, click Image and then choose "Add Books" in the menu. You will see a page that lets you import books via Book ID for the title on our website. The Book ID is given in the Book Info page (example).
  2. From Local Files:

    On the same "Add Books" page as mentioned above, select a book file that has been downloaded to your desktop or mobile device. This method is available only on the Windows system. For Android or Apple's iOS, you have to use the first method, because they encourage you to store files in the cloud, not on your local machines.

How Long will Import Take

  • From Local Files: It may take 1 to 30 seconds, depending on the size of the .bson file.
  • From the Cloud: Additional time is needed, depending on the file size and internet connection speed.

Supported Browsers:

Desktops: Chrome, Firefox, IE10+, and Safari.

Mobile: Safari, Android 4.1+, Chrome for Android, and IE11+.

Note: For Android devices, it is recommended that you install the Chrome browser if your original browser is not Chrome.

Add the Viewer to Home Screen

On Safari and the latest Chrome for Android, a Web page launched from the home screen will be displayed in FULL SCREEN (the "APP mode") which has more viewing area than the "Browser mode" that typically displays the Web address. By adding the Viewer to home screen, the storage quota can also be dramatically increased. Therefore, it is strongly recommended that you add the Viewer to home screen.


For Style s, clicking Image will display a menu. Click it again to hide the menu. Clicking Image will display table of contents (TOC). Click it again to hide TOC. For Style L, the button Image at the top right lets you change the background color, font size, and library view (tiles or list).

In Stye L, the button Image is for going back to the page that contains a link to another page within the book. For instance, a page in a book may contain the link "see Section 2-4, Figure 3". After you jump to the new page, you can click on the button to go back to the initiation page. For Style s, the link "Go Back" in the menu has the same functionality.

By comparison, the button Image is for going to the previous section (or chapter) of the currently displayed section (or chapter) according to their order in a book.

Remove Books from Library

Books may be removed from library only in the list view. For Style s, click on Image will immediately remove the title from the library. For Style L, click Image in front of the title will bring up the "Manage the book" page where you can change the category for the book or remove it from the library.


Double click (using mouse) or double tap (using finger) at the paragraph you wish to bookmark. If successful, a red symbol will appear at the beginning of the paragraph.

Please note that the Viewer does not automatically track which book or where in a book you are reading. You must bookmark to let the Viewer know. If a book is bookmarked, clicking on its thumbnail or title in the library will go to the bookmarked position.

Turn Pages

For touch-capable devices, using a finger to touch the left edge of the screen will scroll down the Web page by the height of a screen. In effect, it turns to the next "screen page". Tap at the right edge will turn to the previous screen page.

Note: This feature does not work on Android OS lower than 4.1.0.

Fast Scrolling

For touch screen, the regular scrolling may be too slow if the Web page is very long. Our Viewer can help you reach the desired position much faster. Use TWO FINGERS to touch the screen. Two small red vertical bars will appear at left and right edges, indicating the position of the displayed contents within the Web page. Pressing the two fingers at the upper or lower half of the screen will scroll toward the top or bottom of the page, respectively. Then, at the position you wish, using a finger to touch the screen will stop the scrolling. Otherwise, the page will scroll to the top or bottom within 5 seconds.

Note: This feature does not apply to the Windows system and Android OS lower than 4.1.0.

Create Highlights, Notes and Links

For mouse-operated devices, use the mouse to select a text. On Android and Apple's mobile devices, use long press (tap and hold for about 1 second) to select a text. The Windows mobile devices require only a short press to trigger the text selection, which will bring up a menu (at the bottom) for highlighting, annotation and creating hyperlinks. The text selection also comes with native functionalities such as copy or dictionary. You can still use these functionalities.

For Android devices, it is recommended that you use the Chrome browser. Some original Android browsers do not allow an app to get the text selection.

Edit and Delete

The following background colors are used to distinguish different types of mark-ups: Highlights, Notes, and Links. Clicking on Highlights will bring up the option to delete the highlight. Clicking on Notes to view, edit, or delete the note. Clicking on Links will go directly to the linked Web page on the internet.

Highlights, Notes and Links can also be deleted by clicking "X" in their listing which can be accessed from the button Image in Style L or Image (then "Show Notes") in Style s.

Advanced Search

You can find a phrase or multiple separated words in a single book or the entire library (database) on your reading devices. You can also use wildcard * in search inputs to match any characters. For instance, if you type "she walks * beauty" (NO quotation marks), the Viewer can find the Web page containing the Byron's poem "she walks in beauty".

A search input with the wildcard * will be treated as a phrase, not separated words. Therefore, to find a phrase, simply add the wildcard * at the beginning. Example: typing "lion fox" can find the Web page containing "lion" and "fox" at different locations, but "*lion fox" can only find the Web page with "lion" and "fox" together.

In the matched Web pages, the matched words are highlighted. A Web page may contain several matches. Clicking a highlighted match will go to the next match.

Back to APP Mode

If an ebook contains links to a Web page on the internet, clicking on the link in the APP mode will normally switch to the Browser mode. On Android, you can easily go back to the APP mode by the back button at the bottom of the device. On Safari, there is no such back button. You'll have to start from the home screen.

Full Screen on PC

For browsers (IE, Chrome and FireFox) on the Windows system, you can switch to the full screen by pressing the key "F11". Press F11 again will return to the normal mode.

Update to New Version

(1) Connect the desktop or mobile device to the internet. (2) Open the Viewer. (3) Turn off the reading device. (4) Turn it on again. (5) Repeat steps 1 - 4 a couple of times, the Viewer will be updated to the latest version. If your reading device is frequently connected to the internet and turned off and on, the Viewer will be automatically updated.


Last updated: November 30, 2014