Lightweight look-up software under Seepics mac

Spit out the preview under the Mac

I can't bear the preview under the Mac. In fact, my needs are very simple, through the left and right key to the picture switch, through the top and bottom keys to 90 degrees of rotation. But preview in order to view the multi-image must go through all the pictures under the Circle folder, and then open together. This design is simply anti-human. Well, since I can't find a small and useful tool, I have to write one myself. It's called Seepics not perfect, but at least enough.

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Lightweight look-up software under Seepics mac