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waifu2x SnowshellUpscayl
Free

Free and open source under the MIT licence.

 Free

Free and open source under the AGPL. There is no paid tier and no per-image cost.

Windows Windows, macOS, Linux
  • One interface for waifu2x, Real-CUGAN and Real-ESRGAN
  • Drag and drop of multiple files or folders
  • Runs entirely on your own machine, so no images are uploaded anywhere
  • Batch processing for whole folders
  • Windows x64 only
  • Depends on the separate upscaler engines for results
  • 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
Open source Open source
License: MIT License: AGPL-3.0
No account needed No account needed
Works offline Works offline

Checked October 2, 2026

Checked September 21, 2026

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