When comparing Icecream Ebook Reader vs KDE Okular, the Slant community recommends KDE Okular for most people. In the question“What are the best desktop readers?” KDE Okular is ranked 3rd while Icecream Ebook Reader is ranked 7th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Clean, customizable UI
The application has an easy to use and understand interface with important features such as search always within easy reach at the top.
The interface can also be customized to best suit wishes. For example, font size can be changed, there's choice between single and double column view when reading books, or table and bookshelf view when managing the library.
Pro Pleasant reading experience
The app tracks how much of the book has been read, jumping between chapters or bookmarks can be done with a few clicks, and there's even a distraction-free mode that takes away all the interface and allows focusing on the book.
Pro It is much more lighter than Adobe Digital Editions, Calibre, etc.
So, Icecream ebook reader will work faster.
Pro Free and open source
Pro Trim margins
Easily trim margins either automatically or manually for easier reading
Pro Featureful
Pro Table selection
Pro Tabbed view option
Pro Supports touch interaction
Cons
Con Requires PRO version for basic functionality
PRO version of the reader is required for reading without gigantic "Buy Me" billboard shoved in face every minute for 10 seconds. Oh and it's needed to copy and paste and edit.
Con Can't read Kindle books
Con No XFA Adobe Forms support
Cannot fill PDF Forms created with Adobe.
Con Requires many KDE libraries
Con No middle-mouse auto-scrolling
Instead of scrolling automatically when holding down the mouse wheel and dragging, it instead zooms in or out, in contrast with many other programs.
Con Poor HiDPI support
You may have to tinker with QT__SCALE_FACTOR environment variables to get the desired size and not blurry content (this is a bug; see https://bugs.kde.org/show_bug.cgi?id=362856 and https://bugs.archlinux.org/task/54688)
Con No search results overview
You have to navigate to next/previous hit one by one
Con No "fit to page" option under printing settings
You can only print the content as given so, when you receive a bigger or smaller image thant the default of the printer, you will have to edit it first on other editor.
Con Slow scroll
Its new ultra-slow-scroll for PgUp and PgDn makes it unuseable.