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resize-image

Resize images with ImageMagick convert to fit specified dimensions.

2|1|Updated Dec 12, 2025
Search Tags:#bash#resize#command-line#imagemagick#thumbnail#image-processing
One-click install
npx skills add https://github.com/ponderingBGI/openjammer --skill resize-image
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: resize-image
Source: https://github.com/ponderingBGI/openjammer/tree/main/.claude/skills/resize-image
Command: npx skills add https://github.com/ponderingBGI/openjammer --skill resize-image

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill resizes images using ImageMagick's convert command when they are too large to view or process, enabling smaller, more manageable images for viewing or processing.

Core Features & Use Cases

  • Image resizing: Resize to fit within specified dimensions while preserving aspect ratio.
  • Quality management: Optional quality/colors adjustments to reduce file size.
  • Use Case: If you have a large screenshot or mockup, resize it to a thumbnail for quick sharing or to comply with token limits for review.

Quick Start

Identify the image and run:

  • identify "/path/to/image.png"
  • convert "/path/to/original.png" -resize 800x600> "/tmp/resized-image.png"
  • Read /tmp/resized-image.png

Frequently Asked Questions about resize-image

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

FAQPage Schema
How do I resize images that are too large to process or view?▼

Resize images using ImageMagick's convert command to shrink them to manageable dimensions. The Skill uses identify to check size and convert with -resize to reduce width, height, or percentage while preserving aspect ratio, saving results to /tmp for immediate use.

Can I resize images from the command line without installing additional software?▼

ImageMagick must be installed on your system. Once available, resize images directly via bash using identify and convert commands with straightforward syntax like -resize 800x600 or -resize 50% to fit your processing needs.

What's the best way to create thumbnails from large screenshots or mockups?▼

Use ImageMagick's convert command with -resize to generate thumbnails that preserve aspect ratio and reduce file size. Specify dimensions like 400x or percentages like 50% to quickly produce smaller previews for sharing or token-limit compliance.

How can I reduce image file size along with resizing?▼

ImageMagick's convert supports optional quality and color reductions applied during resize. Combine -resize with quality adjustments to shrink both dimensions and file size, creating lightweight images suitable for processing or distribution.

Does ImageMagick work with different image formats?▼

ImageMagick's convert command handles multiple image formats. The Skill works with common formats like PNG and supports resizing across format types, making it flexible for various image file inputs and outputs.

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