Upscayl

Upscayl enlarges and enhances low-resolution images with AI. It is built for photos and graphics that are too small or pixelated and need more detail, sharpening them without the soft, washed-out look of a plain resize. It is not a deblurring or focus-correction tool.

It runs Real-ESRGAN models on a Vulkan-based backend and needs a Vulkan-compatible GPU. Desktop apps cover Linux, macOS 12 and later, and Windows 10 and later, and a command-line tool, upscayl-ncnn, is available for scripted and batch jobs.

All processing happens locally on your own machine, with no upload or account. Additional upscaling models can be added through custom models, and it is released under the AGPLv3 license.