When comparing Icecream Ebook Reader vs Sumatra PDF, the Slant community recommends Sumatra PDF for most people. In the question“What is the best Windows eBook reader?” Sumatra PDF is ranked 3rd while Icecream Ebook Reader is ranked 6th. The most important reason people chose Sumatra PDF is:
Sumatra is available for free, licensed under GPL with source code available on [GitHub](https://github.com/sumatrapdfreader/sumatrapdf).
Ranked in these QuestionsQuestion Ranking
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
Sumatra is available for free, licensed under GPL with source code available on GitHub.
Pro Starts quickly
Pro Low resource usage
Pro Elegant interface
Pro Does not have heavy editor features
Annotations and other heavy features are just not needed in reader.
The application consists of a single file that can be run without installation. You can put it on an external device, such as an usb thumb stick and run it on any Windows machine from the thumb stick.
Pro Extensive keyboard shortcuts
It's available in 69 languages.
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 Lacking in features
Sumatra aims for simplicity at the expense of functionality. For example, there's no way to annotate PDFs or edit them.
Con Windows only
Con Fonts are not smooth enough
Not as smooth as e.g. Adobe Reader. No anti-aliasing
Con Cannot crop empty fields
Just got used to this killing feature on Goodreader on Mac.