ON1 Resize is described as 'Enlarge photos up to 1000%. Get the highest quality photo enlargements with Genuine Fractals® technology—patented, fractal-based interpolation algorithms—that quickly enlarge your images without loss of sharpness or detail' and is a Image Upscaling App in the Photos & Graphics category. There are nine alternatives to ON1 Resize for a variety of platforms, including Windows, Mac, Online / Web-based, Android and iPhone. The best alternative is PhotoZoom Pro. It's not free, so if you're looking for a free alternative, you could try AI Image Enlarger or Deep Image. Other great apps like ON1 Resize are Super Photo Upscaler (Paid), STOIK Smart Resizer (Paid), Reshade: Image Resizing (Free) and AI PNG Enlarger (Free Personal).
Powered by AI image upscaling technology, Super Photo Upscaler is an image enhancer which intelligently enlarges photos from low-resolution to high-resolution while maintaining clean edges without losing quality.
Reshade offers the highest quality photo enlargement available for your computer. Resize images without the usual blur, jagged edges, halos, loss of sharpness or detail associated with image enlargement.