Read pdf and epub directly from SD card without importing

[AnotherCat]

Originally Posted by shareddreams

Success!
...From what I am able to gather as an Android noob, you have to allow the reader to scan your files first and once all the books are scanned, they won't be duplicated in another location when you open them from file manager...

I do not believe that is correct when storage and full read and write permissions are set by the app for itself when installed as they normally should be by default (they are by both Pocketbook and Moon+ Reader) and a non faulty card or format. In fact, if I was finding that some sort of scan has to take place first I would, as first response, suspect that I had a problem related to the card (permissions, format, corruption, etc.).

For example, I can copy a book onto any device here from a PC to a folder on the card, not being the folder nominated as the main one in my device's reading app, and then open the book with the device's file manager, selecting my reading app when the file manager asks what reading app to open it with, and the book will open without another copy being made. So, the reading app has never been opened after the book was put on the card prior to it being opened from the file manager and so was never scanned by it beforehand.

[theducks]

I use Calibre Companion to manage my books on my TAB A. I just configured Moon + Pro (free versions limit the features) to just use the books as is. Adobe has a free reader for Android
Calibre companion (paid) allows (as far as Android permits), where to store BY TYPE and which viewer to use for each type.