Thumbnail Image Processing Expert Required

I'm in need of a front end specialist to babel to create thumbnail images for my website that are clear and crisp into a standard thumbnail size on a grid layout. Each image is being created from a video file but when uploaded from a phone, the aspect ration is different that those uploaded from the website. The developer needs to be able to convert all images to a high definition standard size by cropping, rescaling and implementing image processing techniques to accomplish this. Visit www.skigit.com for visual of the problem to be solved.