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 ...

Apple makes adding comments, highlighting text, and adding a signature easy in macOS. Here’s how to annotate a variety of files, from JPGs to PDFs, using macOS’ integrated Preview. Highlighting text, ...

What’s It Like? Genius is a tool for annotating text online. An outgrowth of Rap Genius (a longtime tool for collecting and annotating rap lyrics online), Genius lets users annotate and analyze texts ...

Hypothesis is a free, open access platform that stands out from many other annotation tools with broader functionality. In particular, it offers students the opportunity to work collectively to share ...