Sometimes you want to show someone else what you’re looking at online. You can email her a link, post it on Facebook, or share it on Twitter. But sometimes, you need to show someone exactly what you’re seeing. Why? It might be because you see an error that someone else doesn’t see. Or, you might want to call attention to just part of a website, a program on your computer, or something else on your screen.
This is a classic case where you want to take a screenshot. Screenshots allow you to show someone else what you’re seeing. A few weeks ago, Adam showed Windows users how to take simple screenshots. Today, I want to show Mac users how to take screenshots and then annotate them.
OS X has a built-in screenshot program called Grab. It can handle both snapping a photo of your entire screen as well as what ever is within any given window. But I found Grab’s TIF default file format annoying, since if I want to upload my screenshot to Flickr, I’ve saved my screenshot in the largest file size possible. And if I then want to annotate my screenshot, I have to open the TIF in Photoshop or Fireworks.