Apple's Preview is easy to operate and it's free. If you just want to annotate documents and have a Mac, then you don't need to stray any further than the Preview app already built into macOS. In our ranking of the best free PDF editors, PDF Candy checks in at No. Its text-editing tools are a bit limited, but it excels at converting and creating files. If you prefer free software, give PDF Candy a try. We also like Acrobat Pro's OCR capabilities, including how easy it is to edit scanned text. That's all great if you've got a Mac, but what if you don't? Windows users (or Mac users considering an alternative) should turn to Adobe Acrobat Pro DC, which also boasts an impressive tool set. The app also lets you create PDFs, forms, and tables of contents if you need creation tools on top of editing and annotation capabilities. If you need to edit documents, the best PDF editor - at least on the Mac - is SmileOnMyMac's PDFpenPro 11, thanks to its host of features and outstanding capabilities in optical character recognition (OCR).
