Cupscale

Spec sheet

What it does

Cupscale is an image upscaling GUI based on ESRGAN.Read 12 Oct 2026 · github.com

License

The repository identifies its license as MIT.Read 12 Oct 2026 · github.com

AI backends

It supports Nvidia CUDA, Vulkan/NCNN, and CPU processing.Read 12 Oct 2026 · github.com

Batch processing

Users can batch upscale a directory or multiple individual images.Read 12 Oct 2026 · github.com

Clipboard

Users can load an image directly from the clipboard.Read 12 Oct 2026 · github.com

Comparisons

It can create side-by-side and 50/50 comparisons, plus before-and-after animations as GIF or MP4.Read 12 Oct 2026 · github.com

Desktop app

YesRead 22 Sep 2026 · github.com

Image formats

It lists PNG, JPEG, BMP, WEBP, TGA, and DDS as compatible image formats.Read 12 Oct 2026 · github.com

Image processing

Cupscale can tile and merge images automatically to avoid running out of VRAM, and supports pre- and post-processing resize options.Read 12 Oct 2026 · github.com

Input formats

PNG, JPEG, BMP, WEBP, TGA, DDSRead 22 Sep 2026 · github.com

Installation

The project describes the application as more or less portable and says it is a single executable that can run anywhere.Read 12 Oct 2026 · github.com

Installation note

Temporary files are stored in the installation directory by default, and the README advises against installing in protected locations such as Program Files.Read 12 Oct 2026 · github.com

Maximum scale

4xRead 22 Sep 2026 · github.com

Model tools

It supports on-the-fly model interpolation, model chaining, and includes a converter for NCNN models.Read 12 Oct 2026 · github.com

Release requirements

The latest release instructions say to extract the zip and start Cupscale.exe, preferably outside a protected folder such as Program Files.Read 12 Oct 2026 · github.com

Upscaling method

aiRead 22 Sep 2026 · github.com

Plans and prices

Every Cupscale plan and price →

Where Specifiction places it

• Image Upscaling Software#75 of 997.5