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