waifu2x

Upscale images with waifu2x-ncnn-vulkan and save outputs in the input directory.

Updated Mar 26, 2026
One-click install
npx skills add https://github.com/eryet/claude-skill-collection --skill waifu2x
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: waifu2x
Source: https://github.com/eryet/claude-skill-collection/tree/main/.claude/skills/waifu2x
Command: npx skills add https://github.com/eryet/claude-skill-collection --skill waifu2x

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Upscale images using waifu2x-ncnn-vulkan to improve detail and reduce noise, enabling higher quality visuals for artwork, anime-style images, and product photos.

Core Features & Use Cases

  • Upscale a single image or a batch of images with configurable scale, noise reduction, and model options to balance quality and performance.
  • Choose output format and tile size to manage VRAM usage and final file size.
  • Use Case: enhance low-resolution illustrations for print or web by applying denoising and upscaling in one step.

Quick Start

Provide the input image or folder path and waifu2x-ncnn-vulkan will upscale it using the selected settings.

Frequently Asked Questions about waifu2x

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I upscale anime-style images while reducing noise?

You can upscale anime-style images while reducing noise by processing them through waifu2x-ncnn-vulkan, which simultaneously improves detail and removes artifacts. It applies configurable noise reduction and scaling models to enhance low-resolution artwork.

Can I batch process a folder of images for upscaling?

Yes, you can batch process a folder of images for upscaling by providing the folder path as input. The tool processes each image inside the directory sequentially and outputs the enhanced images with the original name appended by the scale factor.

How do I manage VRAM usage during image upscaling?

You can manage VRAM usage during image upscaling by adjusting the tile size parameter. Smaller tile sizes reduce memory consumption, allowing the processing of larger images on GPUs with limited VRAM without crashing.

What is the best way to enhance low-resolution illustrations for print?

The best way to enhance low-resolution illustrations for print is applying combined denoising and upscaling in one step. Using waifu2x-ncnn-vulkan allows you to configure the scale factor, noise reduction level, and output format to achieve higher quality visuals.

Does image upscaling work with custom output formats?

Yes, image upscaling works with custom output formats by selecting your desired format option before processing. The tool saves the final processed images in your specified format alongside the original input directory.

Why does the output file include the scale factor in its name?

The output file includes the scale factor in its name to follow the naming convention <original-name>_waifu2x_<scale>x.<format>. This ensures the processed images remain organized and clearly identifiable in the same directory as the input.