What is the maximum image resolution / file size?

You can upload an image with up to 50 megapixels. The maximum supported output resolution is 50 megapixels (e.g., 5774 x 8660 or any other aspect ratio). Images larger than that are automatically resized.

The maximum output resolution for preview images is 0.25 megapixels (e.g. 625 × 400).

Remove.bg currently supports images with a file size of up to 22 megabytes.