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jdPixelUpscaler vs Real-CUGAN ncnn Vulkan: catalog facts
jdPixelUpscaler	Real-CUGAN ncnn Vulkan
Free Free and open source under GPL-3.0-only.	Free Free and open source under the MIT license.
Linux	Windows, macOS, Linux
Preserves solid pixel blocks when enlarging images Includes command-line arguments and a D-Bus interface	Runs on Intel, AMD, Nvidia and Apple Silicon GPUs Uses Vulkan for GPU inference
Does not account for neighboring pixels or image transitions Linux only	The project describes itself as early in development
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.