Aeternum (lt.: “Eternal”) is a simple and minimal image upscaler using upscayl-ncnn as it’s backend. Aeternum is built using Rust and egui.
This is free and open source software.
Key Features
- Models:
- 4x-AnimeSharp.
- 4x-UltraSharp.
- realesrgan-x4plus-anime.
- realesrgan-x4plus.
- Define the image resolution to upscale to.
- Set the level of compression.
- Supported image formats: PNG, WebP, and JPG.
- Wide GPU support.
- Cross-platform support – runs under Linux and Windows.
Website: github.com/cloudy-org/aeternum
Support:
Developer: FoxxMD
License: GNU General Public License v3.0

Aeternum is written in Rust. Learn Rust with our recommended free books and free tutorials.
Related Software
| Image Upscaler Tools | |
|---|---|
| Final2x | Enhance your images with super-resolution |
| Upscayl | Uses sophisticated AI models to enhance images |
| Upscaler | Upscale and enhance images |
| Real-ESRGAN GUI | AI image enlargement tool |
| chaiNNer | Node-based image processing GUI |
| Aeternum | Simple and minimal image upscaler |
| waifu2x ncnn | Image upscaler / denoiser built on the ncnn inference framework |
| upscaler-hollowaykeanho | Image and video upscaling |
| jdPixelUpscaler | Upscale images per pixel |
Read our verdict in the software roundup.
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