[wscourge]

ELI5: why do I need to upload the preview? Is it for some reason impossible for you to downsize the high-res pic? Is there a manual step required of me to take after?

What am I missing here, why not have just a single high-res pic upload?

[tamnv]

My tool doesn't directly help you in removing the background from images. It helps you obtain high-resolution, background-free images by uploading the original image and the preview image (the image with the background removed but with low-res) from PhotoRoom or other background removal services. ^^