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Upscayl vs ON1 Resize AI: catalog facts
Upscayl	ON1 Resize AI
Free Free and open source under the AGPL. There is no paid tier and no per-image cost.	Paid Paid software with a free trial.
Windows, macOS, Linux	Windows, macOS
Runs entirely on your own machine, so no images are uploaded anywhere Batch processing for whole folders	Enlarges photos up to 10x Combines AI upscaling with fractal-based enlargement
Needs a Vulkan-compatible GPU; the project warns many integrated chips will not work Slow on weaker hardware, and memory-hungry on large images	Paid, closed-source software Focused on enlargement only, not general editing
Downloadable app	Downloadable app
Open source	Closed source
License: AGPL-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 September 21, 2026	Official website Full listing and sources Checked September 26, 2026

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