To take full advantage of the annotation tools built into macOS, enable the super-handy Markup extensions to access these features in many stock and third-party apps simply by hovering the mouse pointer over an image.
You can instantly annotate almost anything in iOS, including any screenshot you take. Right after capturing a screenshot on your iPhone or iPad, you can immediately add text, crop out unwanted parts, highlight specific areas and more.
Apple’s expressive Messages application on the iPhone, iPad and iPod touch includes features that help you annotate image attachments with the Markup tools, touch them up with just a few taps using built-in Photos filters and browse files such as PDF or Pages docs separately of images—all without ever leaving the Messages app.
In this step by step tutorial, we’re going to teach you how you can edit, annotate and manage attachments in Messages for the iPhone, iPad and iPod touch.