OneNote is probably my most used software application. Its availability on iOS was a huge factor in me purchasing my iPad Pro 9.7. I primarily use it for what I call ”preparatory research”. On my PC I scan and OCR a bunch of Japanese books, almost every single book has vertical text. Once that is done I use the Print to OneNote driver and every page gets its own page in a section devoted to that book. Example: I’ll have a notebook called Foreign Relations in Edo Period, in that I’ll have a section on Russian ships visiting Japan during this period with a book dedicated to the subject, perhaps containing some 300 pages. On a page will be some Russian captain’s name. I highlight his name, add transliteration and then add information on that captain from other sources to the page or set links to other places in my notebooks where he might appear. In order to make this as smooth as possible I scan the pages at 600 DPI so that I can enlarge some difficult to read or archaic characters not in use anymore. This all works smoothly on PC and Android. Not so much on iOS. IPads use screen rendering known as Display PostScript and since the scan is done to PDF I have assumed that the page will be able to display at its equivalent to 600 DPI. However, OneNote on iOS seem to treat the graphic rendering of the page as a bitmap. It gets blurry as I try to enlarge. On Windows and Android it first gets blurry but then it adjusts to the page and sharpens so it is easy to read. But on the iPad it remains blurry. So my questions is; should I scan to some other format? Or is this an inherent problem in OneNote for iOS? Is it a known problem? (I haven’t really been able to find similar complaints). Advice and tips gratefully accepted between the hours of 4 AM and 11.30 PM.