Upscayl

Upscayl is a free and open-source AI image upscaler designed to enhance the resolution and visual quality of digital photographs, graphics, and scanned images. It runs natively on Linux, macOS, and Windows, offering a desktop application that leverages locally executed deep learning models to upscale images without relying on cloud servers (though a separate cloud service, Upscayl Cloud, is also available). The primary function of Upscayl is to take low-resolution or blurry images and produce higher-resolution outputs with improved sharpness, reduced pixelation, and better overall clarity. This process is achieved through trained neural networks that analyze image patterns, textures, and edges to intelligently fill in missing details during upscaling, avoiding the simple pixel stretching that traditional interpolation methods produce. Users can select from multiple AI models, each optimized for different types of content—such as photographs, anime-style artwork, or general images—to achieve the best possible results for their specific use case. The software supports common input formats like JPEG, PNG, and WebP, and outputs upscaled images in formats such as PNG or JPEG while preserving the original color profile and aspect ratio. Beyond basic upscaling, Upscayl also includes batch processing capabilities, allowing users to queue multiple images for conversion simultaneously, which is useful for photographers, designers, archivists, and hobbyists dealing with large libraries of digital media. The tool is particularly valuable for restoring old or degraded family photos, improving screenshots and low-resolution web graphics, enlarging small images for printing, enhancing medical or scientific imagery where fine details are critical, and preparing assets for game modding