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Upscaler vs Waifu2x-Extension-GUI: catalog facts
Upscaler	Waifu2x-Extension-GUI
Free Free and open source under the GPL-3.0 licence.	Freemium Free for personal use under the project licence. Commercial use requires the paid Premium…
Linux	Windows
Runs fully offline on your own machine Sandboxed with no internet access	It bundles several upscaling and frame-interpolation engines behind one Windows interface and works with AMD, Intel and…
Requires a Vulkan-capable GPU Linux only	The licence permits personal use only, so commercial use requires buying the Premium build, and the code is…
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 22, 2026

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