Upscale Image (Upscayl)

AI upscaling via upscayl-bin — the CLI shipped with the Upscayl GUI. Same Vulkan-accelerated realesrgan-ncnn-vulkan engine as standalone, but with Upscayl's curated model selection bundled.

When to use

• Low-res source needs to be enlarged for print or display.
• AI-generated image at 1024px wants 4096px output without re-prompting.
• Old photos / screenshots need detail recovery.

Do not use this skill when:

• The source is already large enough — upscaling rarely improves a 4K-native image.
• The user wants traditional bicubic / lanczos upscaling — fast-resize is the right tool (much faster, no AI).
• The image is text/document-heavy — upscalers can hallucinate glyph detail; consider tesseract re-OCR + re-typeset instead.

Inputs