View and edit image files in addition to PDF files.ģ. Thumbnailes view, and edit (rotate, detele, or reorder pages).Ģ. Combine PDFs (combine two PDFs, or combine part of a PDF with another PDF) ħ. Though it doesn't have so many features compared to other tools in this list, but it can be used to highlight text, add various shapes and add in notes. In other words, it's suitable for simple use.Ħ. Apple's built-in Preview application is phenomenal and often overlooked.