Image Super Resolution Tool review
A free, open-source Windows upscaler with batch processing and three AI model families.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Image Super Resolution Tool is a free, open-source Windows desktop application for enlarging still images and image folders with AI super-resolution models. It is intended for Windows 10 and Windows 11 users who want a local graphical interface rather than a browser-based workflow. The tool supports ATD, HAT, Real-ESRGAN photo, and Real-ESRGAN anime/illustration models, making it suitable for photographs as well as anime and illustration content. Input support covers JPG, JPEG, PNG, WEBP, BMP, and TIF/TIFF files.
Its strongest fit is batch-oriented upscaling. Users can process a single image or a folder, choose 2x, 3x, or 4x output, and select PNG, JPEG, or WEBP for export. Automatic NVIDIA GPU and VRAM detection can help configure processing usage, while automatic sharpening and denoising provide additional image controls. A progress bar reports elapsed time and estimated remaining time, which is useful when processing multiple files. The desktop installer includes the models, so the application is packaged as a standalone Windows workflow rather than a minimal interface that requires separate model downloads.
The main trade-off is platform and workflow scope. Image Super Resolution Tool is focused on Windows desktop processing and does not present a broader cross-platform or service-based ecosystem. Users who need an API, a web workflow, or support beyond the stated Windows environment should consider an alternative built for those requirements. For Windows users seeking free folder batching, selectable AI models, up to 4x scaling, and local GPU-aware processing, it is a focused choice. Its MIT License and open-source distribution also suit users who prefer software they can inspect and modify.
Image Super Resolution Tool pros and cons
- Where it wins
- Batch-processes individual images or entire folders
- Offers ATD, HAT, and Real-ESRGAN model families
- Supports 2x, 3x, and 4x output with GPU detection
- Where it doesn't
- Windows-only desktop application
- NVIDIA CUDA processing is the supported GPU path
- No API availability is listed
Image Super Resolution Tool fact sheet, pricing and score →
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