Wouldn't it be nice to strip out the white borders on screenshots with an instant alpha tool like you get in Preview and Keynote? Right now I save my screenshots to the desktop, and open in Preview to get that functionality.
How are you using Snagit such that you have "white borders" on your screenshots? While I view "instant alpha" as an interesting feature, I don't understand your use case for it at all... Can you elaborate upon how it is that your captures are ending up with a white border?
Sure. I give my fair share of presentations and sometimes want the look of a transparent png from a screenshot of an image so that it blends better with the theme or colored background I may have on my presentation.
For instance, taking a screenshot of an iPad app icon from iTunes or the web. These icons have rounded corners, so you get a border around it once it is snapped with Snagit. If the app is used on a white background, it is usually fine, but on a colored background, you get the border. Sometimes it is white borders, sometimes gray, sometimes other colors.
Does that make sense? Same would apply to other irregularly shaped icons or stock images that are shot with a plain white background, when really you would have preferred them to be a transparent png because they are used on a website with a darker color scheme.