There are a few disadvantages however to using Awesome Screenshot. When you activate the extension, you must close out the webpage in order to quit the extension for that page. There’s no cancel button to get out of the extension.
While there’s an Undo button in the extension‘s toolbar, you can‘t select and move around annotations after you use them. So you need to be pretty precise about where you want extensions to be made. Despite these shortcomings, Awesome Screenshot is a useful extension for what it does.