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Upscayl vs Icons8 Smart Upscaler: catalog facts
Upscayl	Icons8 Smart Upscaler
Free Free and open source under the AGPL. There is no paid tier and no per-image cost.	Freemium Pricing is not detailed in the research; an API is offered alongside the web tool.
Windows, macOS, Linux	macOS, Web
Runs entirely on your own machine, so no images are uploaded anywhere Batch processing for whole folders	Up to 8x enlargement Batch processing
Needs a Vulkan-compatible GPU; the project warns many integrated chips will not work Slow on weaker hardware, and memory-hungry on large images	No Windows or mobile app mentioned Images are processed on Icons8 servers in the web version
Downloadable app	Downloadable app, Web application
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.