Upscayl - A Free and Open-Source Image Enlarger

If you have low resolution images that you'd like to enhance and enlarge, maybe in your Photos library from an older iPhone or older digital camera, you can use Upscayl to enhance and enlarge them up to 4x. The resulting image had added realism and is absent blurriness and jpg compression artifacts. It works on jpg, png, tiff and other common image formats using AI technology that is based on the program files on your computer. No Internet connection is required.

The program is simple to use and works quite well with the default settings. It can enlarge images to 2x, 3x or 4x. Even complex full color images process quickly. You can use it to enlarge and enhance old family photos. Batch processing is also on option. It will make conventionally sized images large and sharp enough to use for prints and posters. Anyone from the casual smart phone user to archivists and historians can find a use case for this application.

Although there is a paid version of Upscayl on the Mac App Store, you can download and use the identical program from Upscayl.org by choosing the DMG download option. Versions are also available for Windows and Linux. The source code is on GitHub. You can file tech support requests there. The developer, Nayam Amarshe, is also available on Twitter and has a listed email address.