image

Manipulate images via slimg CLI for conversion, optimization, resizing, cropping, and canvas extension.

Updated Aug 23, 2026

Search Tags:#image processing #image optimization #resizing #format conversion #cropping #slimg

Ready to run

npx skills add https://github.com/heg-wtf/cclaw --skill image-heg-wtf

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: image
Source: https://github.com/heg-wtf/cclaw/tree/main/src/cclaw/builtin_skills/image
Command: npx skills add https://github.com/heg-wtf/cclaw --skill image-heg-wtf

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill automates various image manipulation tasks, saving time and effort on repetitive image processing operations.

Core Features & Use Cases

Format Conversion: Easily convert images between formats like JPEG, PNG, WebP, AVIF, JXL, and QOI.
Optimization & Resizing: Optimize image quality and file size, and resize images while maintaining aspect ratio or to specific dimensions.
Cropping & Extending: Crop images to specific regions or aspect ratios, and extend canvas size with options for transparency or color.
Batch Processing: Apply operations to multiple images recursively.

Quick Start

Use the image skill to convert the attached image file 'photo.png' to webp format.

Frequently Asked Questions about image

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

FAQPage Schema

How do I convert PNG to WebP or AVIF format?▼

The slimg CLI performs format conversion between JPEG, PNG, WebP, AVIF, JXL, and QOI. You simply pass the source image and specify the target output format to optimize images for web development and content creation workflows.

What's the best way to batch resize images while maintaining aspect ratio?▼

Batch resizing while maintaining aspect ratio is handled by the slimg CLI, which applies operations recursively to multiple images. This automates repetitive image manipulation tasks for content creation and web development workflows.

Do I need to install slimg to process images?▼

Yes, the slimg command-line tool is required for all image manipulation tasks. Every operation, including format conversion, resizing, and cropping, relies on the slimg CLI to execute the underlying processing.

Can I extend image canvas size with a transparent background?▼

Yes, extending canvas size with a transparent background is supported by the slimg CLI. You can specify transparency or a solid color when extending image boundaries for web development and content creation workflows.

How does image optimization reduce file size for web development?▼

Image optimization reduces file size by adjusting compression parameters via the slimg CLI. This minimizes digital asset weight for web development while maintaining acceptable visual fidelity for content creation workflows.

What image formats work with slimg for digital asset management?▼

Slimg supports JPEG, PNG, WebP, AVIF, JXL, and QOI formats for digital asset management. These formats are fully compatible with the tool's conversion, optimization, resizing, cropping, and canvas extension operations.