Upscayl

Upscayl is a leading free, open-source AI image upscaler available for Linux, macOS, and Windows. Built using the Vulkan API and advanced super-resolution models (including Real-ESRGAN and custom community architectures), Upscayl enables creators, photographers, and digital artists to upscale low-resolution images by up to 16x without sending private data to cloud servers.

### Core Architecture & Capabilities - **Local On-Device Inference**: Operates natively on your workstation GPU using Vulkan, requiring zero cloud compute or internet connection. - **Multiple AI Models**: Includes general photo upscaling, digital art sharpening, anime/illustration models, and double-pass super-resolution. - **Batch Processing**: Upscale entire folders of images simultaneously with automated output naming and format conversion. - **Privacy First**: Zero telemetry or cloud uploads; your images never leave your local machine. - **Upscayl Cloud**: Optional paid cloud rendering service for mobile devices and users without dedicated GPUs.