A private, local-first AI image upscaler for macOS. Clarity uses Real-ESRGAN on Apple Silicon and keeps every image on your Mac.

• Real-ESRGAN neural photo upscaling with the realesrgan-x4plus model
• 2x and 4x scale options
• JPG, PNG, and WebP output
• Drag-and-drop batch queue
• Before/after comparison
• Fully local processing with no uploads or telemetry
• High-quality Lanczos fallback if the AI runtime is unavailable

Double-click run.command.

python3 -m pip install -r requirements.txt
python3 server.py

Open http://127.0.0.1:4173.

• macOS on Apple Silicon or Intel
• Python 3.9+
• Pillow

The repository includes the official universal macOS Real-ESRGAN portable runtime and photo model. No PyTorch, CUDA, account, or API key is required.

Clarity binds only to 127.0.0.1. Images are processed in temporary local directories and returned directly to the browser. The app does not upload images, use telemetry, or call a cloud service.

• Architecture
• Development
• Publishing to GitHub
• Contributing
• Security
• Third-party notices

Original Clarity code and documentation are available under the MIT License. The bundled Real-ESRGAN runtime and model are subject to their upstream licenses; see Third-Party Notices.