Image
Upscayl
🆙 Upscayl - #1 Free and Open Source AI Image Upscaler for Linux, MacOS and Windows
★ 50.1k starsAGPL-3.0
View guide →Simple Flask web app that upscales low-res images with AI
ImageUpscaler is an open-source image project by g4m3r0 (g4m3r0/ImageUpscaler on GitHub). It has 129 GitHub stars and 59 forks, is released under the MIT license, and was last updated on GitHub on 13 April 2026.
Launch the Flask server locally or visit the hosted demo.
Drop in a low-resolution photo.
The AI model enlarges and sharpens the image.
Save the higher-resolution result.
TensorFlow-based super-resolution.
Upload and download in the browser.
A small Flask app with few dependencies.
Try it on the hosted Vercel link.
Free for commercial use with attribution.
Easy codebase to learn AI upscaling from.
Download the source and move into the project folder.
git clone https://github.com/g4m3r0/ImageUpscaler.git
cd ImageUpscalerEvery project documents its own setup; start with install requirements.
cat README.md | head -60Follow the project's launch command — Docker, pip, npm, or a binary release.
# see README for the exact launch commandIt is an open-source project at g4m3r0/ImageUpscaler with 162 forks. Check the repo's contributors and recent commits to see how active maintenance is.
MIT licensed — commercial use allowed with attribution.
Yes — a hosted version is linked on the project site.
It runs on CPU; a GPU would speed up larger images.
This is a Python/Flask web app rather than a JavaScript library.
🆙 Upscayl - #1 Free and Open Source AI Image Upscaler for Linux, MacOS and Windows
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🆙 Upscayl - #1 Free and Open Source AI Image Upscaler for Linux, MacOS and Windows
Free and open — grab the source, star the repo, and start creating.