Runs U-2-Net (Apache-2.0, free for commercial use) on-device to cut the subject from its background. First run downloads the model and caches it in the browser for next time.

Trim transparent padding to the subject's bounding box, or crop to a common aspect ratio (centered) for social media and marketplace listings.

Traces flat color regions into scalable paths. Best for logos, line art and flat illustrations — photographic images will look posterized, which is inherent to vector tracing, not a bug.

2× and 4× run a real super-resolution model that reconstructs detail. 8×, 10× and 20× apply that same 4× pass, then a high-quality resize for the rest of the way. Fast mode skips the AI pass entirely for an instant (lower-quality) resize.