Files each product photo into a folder named after the Etsy listing it belongs to. The hard part isn't the photos you named well — it's IMG_4471.png and everything else your camera named. Those get compared against the photos that did match, and filed with the product they actually look like. It won't guess: anything uncertain gets flagged, not moved, and every run undoes in one click. Runs entirely on your machine. Try it with sample photos before connecting anything. Free for 200 photos.
