Download QualityScaler – Free AI Image Upscaling Tool for Windows

QualityScaler is a free, open-source AI-powered image upscaling tool for Windows that enhances the resolution and quality of images and videos using deep learning super-resolution models. With just a few clicks, you can upscale low-resolution photos, screenshots, artwork, and video frames to 2x, 4x, or higher resolutions while preserving or enhancing fine details.

QualityScaler supports a variety of AI upscaling models including RealESRGAN, BSRGANx2, BSRGANx4, and others, allowing you to choose the best model for your specific type of content — photographs, anime illustrations, manga, or general digital art. The tool processes images on your local GPU for fast results without any cloud dependency.

QualityScaler is particularly popular among photographers, digital artists, and video creators who want to restore old photos, upscale low-resolution assets, or prepare content for high-resolution displays and printing.

Key Features

• AI-powered image upscaling at 2x, 4x, and higher resolutions using deep learning models
• Supports multiple models: RealESRGAN, BSRGANx2, BSRGANx4, and more
• Upscales photos, illustrations, anime art, manga, and screenshots with detail enhancement
• GPU-accelerated processing for fast local upscaling without cloud dependencies
• Batch processing — upscale multiple images or video frames at once
• Supports JPEG, PNG, BMP, TIFF, and other common image formats
• Free and open-source for Windows with GPU support via ONNX Runtime

How to Install

1. Click the download button below to get the QualityScaler package for Windows.
2. Extract the ZIP archive to any folder on your computer.
3. Run QualityScaler.exe — no installation required (portable app).
4. Select your input images or folder, choose an AI model and upscale factor.
5. Click Upscale and wait for the GPU to process — output images are saved to the specified folder.