As a developer you've probably had the "that's not what I see" experience when dealing with how a design looks or how a certain feature works (or doesn't work) in a particular browser. The client (or maybe someone else on your team) sees a bug that you don't see. Or maybe it's the other way around. Whatever the case, being able to quickly create a screenshot and annotate it is a huge time saver.
The first option in the CloudApp toolbar (the camera icon) is the screenshot tool. The fourth option, however, lets you take a screenshot and annotate prior to saving it. When you click the annotate screenshot button, you'll see the following window on the left.
In this case, I've taken a screenshot of the search box on scotch.io on Safari 10 for desktop, so I can point out an alignment problem with the magnifying glass that appears inside the box. As many developers have discovered, Safari is the new IE in terms of bugs and incompatibilities. So a tool like CloudApp can come in handy when doing testing on Safari.
In the annotation window you'll have access to lots of features including a line tool, arrow tool, shape tools, colors, crop tool, pixelate tool, and spotlight tools. In this case, I used the Oval Tool to indicate where the bug is.
Once you hit "save" in the annotation window, the link is copied to the clipboard and you're ready to share the URL and get feedback. In fact, for every piece of content that gets created or added to CloudApp, you automatically get a URL that uses the 'cl.ly' link shortener copied to your clipboard, which you can then share with anyone.
Let's look at another handy way to use CloudApp.