Academics work with a lot of PDF files—journal articles, scanned ILL materials, and, increasingly, historical documents available through archives such as Google Books. After my first few posts here ...

Two weeks ago I asked ProfHacker readers, “How Do You Organize and Annotate PDFs?”, and you rose to the challenge. I can’t recount the entire discussion here (though it’s well worth reading through in ...

On Windows and Mac machines, it’s not too troublesome to add text or drawings (such as signatures) to PDF files, but [Mansour Behabadi] found that on Linux machines, there didn’t seem to be a ...

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Google’s push to optimize its first-party apps on tablets continues with Drive for Android adding the ability to annotate PDFs using a stylus or finger. You will be able to “use your finger or a ...

Edit, convert, sign, annotate, and organize PDFs on your Mac with a PDF Expert Premium lifetime license, now $79.99 (MSRP ...

Many apps can display PDFs on an iPad; that capability is built into iOS. But only a few of them can handle annotations—such as the notes, highlighting, and other elements that you use to comment on ...

Evernote’s free image editing app, Skitch, now allows you to annotate and share PDF files on your iPhone, iPad, and iPod touch. You can then share those PDFs with other Skitch users, who will get a ...

PDFs are great, portable, cross-platform documents that you can read on your Mac, your iPad or iPhone, or on a PC. But this ubiquitous file format is also useful when you need to share works in ...