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Topaz Gigapixel vs Upscayl: catalog facts
Topaz Gigapixel	Upscayl
Paid Commercial software sold by Topaz Labs, with cloud credits for cloud rendering.	Free Free and open source under the AGPL. There is no paid tier and no per-image cost.
Windows, macOS	Windows, macOS, Linux
Upscaling up to 16x pixels Face recovery for portraits and old photos	Runs entirely on your own machine, so no images are uploaded anywhere Batch processing for whole folders
Paid commercial software Local rendering needs capable hardware	Needs a Vulkan-compatible GPU; the project warns many integrated chips will not work Slow on weaker hardware, and memory-hungry on large images
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: AGPL-3.0
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked September 21, 2026

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