Select 2K for a moderate size increase, 4K for larger viewing or export, and 8K only when the final use benefits from a very large image. Upscaling cannot recreate the exact real detail that was never present in a tiny or heavily compressed source, but generative enhancement can improve perceived texture, edges, hair, and skin detail.
Because the enhancement is generative, some facial or fine texture details may be recreated rather than enlarged pixel-for-pixel. Review identity-sensitive images carefully. This dedicated page accepts images only and shows the fixed job price before generation.