Slideshow widget

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I want a widget that will allow me to select an entire folder of pictures to cycle through in a slideshow. All the ones I've tried want me to pick each image individually and crop it to my desires. I just want to select the entire folder and not have to crop, it can just display the entirety of the photo.

Thanks

 

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Oh, forgot to mention that I would prefer a free app. I'm willing to spend a buck or two but if there is a free option that is good then I would prefer it.