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Upscaler vs Final2x: catalog facts
Upscaler	Final2x
Free Free and open source under the GPL-3.0 licence.	Free Free to download, with source published on GitHub.
Linux	Windows, macOS, Linux
Runs fully offline on your own machine Sandboxed with no internet access	Runs on Windows, macOS and Linux Image upscaling runs locally
Requires a Vulkan-capable GPU Linux only	Upscaling speed depends on local hardware The project moved repositories, so older links point to the previous location
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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