Product Thumbnail Photo Editing

I have a set of product photos that need to be turned into clean, eye-catching thumbnails. I’ll supply the original images; your job is to crop, retouch, and resize them so they look sharp and consistent in a grid layout online. Please keep file sizes web-friendly while preserving detail and color accuracy. Final files should be delivered in both PNG and JPEG, ready for immediate upload at the standard thumbnail dimension we agree on. If you can share a quick sample of similar work, that will help me move fast on awarding the project.