The markup tool in Safari lets you highlight text, add notes, insert your signature, and more. To access it on Mac, take a screenshot of the webpage or convert it into a PDF and use the Markup tool ...

The latest iPad app from Readdle, a company famous for its excellent productivity apps for iOS, has perfected PDF annotation and note taking on a touchscreen device. It’s called Remarks, and it allows ...

A good annotation tool can make the iPad a powerful companion for any teacher and scholar, especially if combined with a stylus for writing on the screen. But a bewildering variety of apps now exist ...

I am not a big fan of Web annotation services that let people add their own virtual Sticky Notes or comments to Web pages for others to see. But Web annotation is back with the launch today of ...

Yet another web annotation service is launching today. WebNotes is releasing virtual highlighting and sticky-note tools designed to help people track and annotate online content. The tools let users ...

PDF is one of the most widely used formats for sharing and viewing documents, especially in professional and educational settings. From business reports and academic papers to eBooks and user manuals, ...

Reading has always been a solitary pursuit for many, but a new and exciting trend is taking over the bookish world. Book annotation with friends is more than just making notes in the margins—it’s ...

Annotation service now has a professional version for users who want to mark up PDFs along with normal Web pages. Josh Lowensohn joined CNET in 2006 and now covers Apple. Before that, Josh wrote about ...