Via Scoop.it – IT & education
As researchers you always try to keep track of your resources and organize your data in the best way possible. Part of the data you might be working on is PDF documents and ebooks. This format is largely used by educators and scholars all around the world. It is user friendly and offers a comfortable readability. I personally prefer to read PDF files to any other type of docs. Unfortunately, PDF documents do not offer so much freedom to their readers, for in most of the times one can not tweak, highlight or crop any portion from within without using some third party tools.Worse even is the fact that these tools are not always free and you have to pay to start using them. But this is not the case with the tools below. They are free and offer a wide range of features that are practically useful for researchers.
Via educationaltech-med.blogspot.com
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