Upscayl Open Source AI Image Upscaler

Upscayl is a free, open-source AI image upscaler for Linux, macOS, and Windows. It uses Real-ESRGAN models with Vulkan GPU acceleration to enhance low-resolution images, supporting batch processing, custom models, and multiple output formats.

Installation

Use the upstream install or setup path that matches your environment:

• brew install --cask upscayl
• git clone https://github.com/upscayl/upscayl
• npm install
• npm run start

Requirements and caveats from upstream:

• I recommend using Volta: https://volta.sh for installing Node.js.
• Download and install volta, then do: volta install node.

Basic usage or getting-started notes:

• Right Click AppImage -> Go to Permissions tab -> Check 'allow file to execute' and then double click the file to run Upscayl.

• If you get a SmartScreen warning - click 'More Info' and then 'Run Anyway' OR press 'YES' on the unverified publisher dialog.

• RUN THE DEVELOPMENT SERVER LOCALLY

• Source: https://github.com/upscayl/upscayl

• Extracted from upstream docs: https://raw.githubusercontent.com/upscayl/upscayl/HEAD/README.md

Source

• Agent Skill Exchange