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imagemagick-conversion

Convert, resize, and batch-process images using ImageMagick command-line operations.

Updated Aug 23, 2026
Search Tags:#webp#batch processing#resize#thumbnails#imagemagick#image conversion#mogrify
One-click install
npx skills add https://github.com/chhpt/skills --skill imagemagick-conversion-chhpt
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: imagemagick-conversion
Source: https://github.com/chhpt/skills/tree/main/skills/imagemagick-conversion
Command: npx skills add https://github.com/chhpt/skills --skill imagemagick-conversion-chhpt

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve? Manually converting, resizing, and optimizing images one by one is slow and error-prone, especially when preparing assets for web deployment or processing large batches of files. ## Core Features & Use Cases - Format Conversion: Convert between PNG, JPEG, WebP, GIF, and TIFF formats individually or in batch with mogrify. - Resizing & Thumbnails: Resize by percentage, dimensions, or aspect-ratio-preserving constraints, and generate thumbnails quickly. - Quality & Optimization: Adjust compression quality, strip metadata to reduce file size, and apply transformations like rotate, crop, and flip. - Use Case: You have a folder of 200 JPEG photos that need to be resized to a maximum width of 1920px and converted to WebP for a website. A single mogrify command handles the entire batch while preserving the originals. ## Quick Start Ask the assistant to convert all JPEG images in the current folder to WebP format resized to 800 pixels wide using ImageMagick.

Frequently Asked Questions about imagemagick-conversion

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

FAQPage Schema
How do I convert images between formats with ImageMagick?▼

Use the magick command with an input and output file, such as magick image.jpg image.png, and the format is inferred from the output extension. For batch conversion, use magick mogrify -format png *.jpg to convert all files at once.

How to batch resize images while keeping aspect ratio?▼

Use magick mogrify -resize 800x600 -path output/ *.jpg to resize all images to fit within 800x600 while preserving aspect ratio. The -path option writes results to a separate directory so originals stay untouched.

What is the difference between mogrify and convert in ImageMagick?▼

Mogrify modifies files in place or writes to a directory specified with -path, making it efficient for batch operations. Convert (or plain magick) always creates a new output file, which is safer for single-file operations.

Does ImageMagick support WebP and modern image formats?▼

Yes, ImageMagick supports WebP along with PNG, JPEG, GIF, and TIFF. You can verify supported formats on your installation by running magick identify -list format.

When should I not use ImageMagick for image editing?▼

ImageMagick is not suited for advanced photo retouching, complex filters, video processing, or vector graphics. Use GIMP or Photoshop for detailed editing, FFmpeg for video, and Inkscape for vector work.

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