Show HN: Restoring high-res, background-free images from previews

I'm confused about the purpose of this.

So "preview" actually means "edited version with background removed"? That doesn't seem like a preview.

> Why do I need to upload both the original and preview images? Uploading both the original and preview images ensures accurate background recovery. The original image provides essential details for enhancing the resolution of the preview image, resulting in a higher-quality final output.

But Rembgai doesn't recover the background? Wouldn't it be a whole lot easier to enhance the whole image then remove the background? Only one upload needed, with no separate editing.