If you want to ZOOM image, Click on 'three horizontal bars' at top left corner below, a new menu will open,click on 'settings' and you will find Zoom option there. OR use + sign at the bottom of preview (as the case maybe)
M Waseem Anwar
I am student of C.A.Blogging is my passion . i am founder of introducing new trends in books website especially adding scribd preview for online reading, and you will see this feature in many websites while browsing.My This Project Paksociety is now Pakistan's no 1 website related to books.And in future i am going to start new projects.