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ImgUpscaler vs Final2x: catalog facts
ImgUpscaler	Final2x
Freemium Free to start, with paid web plans for batch processing; the Upscal apps are licensed…	Free Free to download, with source published on GitHub.
Web	Windows, macOS, Linux
2x and 4x upscaling in the browser Supports JPG, PNG, WebP and AVIF	Runs on Windows, macOS and Linux Image upscaling runs locally
Web subscription does not include the desktop or mobile apps Batch processing requires payment	Upscaling speed depends on local hardware The project moved repositories, so older links point to the previous location
Web application	Downloadable app
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	No account needed
Needs internet	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.