I've been using this app for almost two years now. It has grown into one of the most useful digital imaging utlilties I have. It is simple and stright forward, as well as pretty fast. However, this app still desparately needs ONE MORE feature - the ability vary thumbnails image sizes. I am surprised more people haven't begged the developer for this?

And this brings me to a major point. How about us video guys?! A very useful thing would be a simple and modifiable cropping ruler\guides settings for displaying (and cropping) video frames. Some basic SD and HDV standard frame sizes would be nifty, like 640x480 (perhaps also 648x486), 720x480, 1980x1080, etc...

Adding the capabilities for previewing animation would allow us to use this app for previewing time-lapse, stop-motion animation, etc. All we'd need is a fast\robust RAM preview, like After Effects. This would bypass the need to set up an AE project in order to see the result of multiple frames as an animation. ViewIt! would then be more useful for those moving into dynamic media.

Certainly this can be crudely accomplished now by scrubbing the preview slider back and forth in the normal view mode, but with the addition of a RAM Preview (or at leat the ability to use a RAM Caching option for the same purpose) movie previews could be automated as well.

Hey...you might even be able to call it "Pro" and charge some additional money to recoup your work! I'd pay!