Baoyu Compress Image
Documentsbaoyu-compress-imageBaoyu Compress Image is an Agent Skill for documents published in the ECNU-ICALK/AutoSkill repository on GitHub: a SKILL.md instruction file an AI agent can load to do this task.
Compresses images to WebP (default) or PNG with automatic tool selection. Use when user asks to "compress image", "optimize image", "convert to webp", or reduce image file size.
How to use this skill
Bring this guide into your coding agent with a prompt tailored to the tool you use.
- Open your project in Codex.
- Copy and paste the prompt below.
- Review files and risks before approving any action.
Inspect the Agent Skill at https://github.com/ECNU-ICALK/AutoSkill/blob/HEAD/SkillBank/Common/baoyu-skills/baoyu-compress-image/SKILL.md and all supporting files. Report provenance, permissions, scripts, dependencies, and security risks. Propose an exact installation into .agents/skills/baoyu-compress-image, but wait for my approval before writing files or running scripts.
Copying this prompt does not install or run the skill. Review third-party files before use.
Image Compressor
Compresses images using best available tool (sips → cwebp → ImageMagick → Sharp).
Script Directory
Scripts in scripts/ subdirectory. Replace ${SKILL_DIR} with this SKILL.md's directory path.
| Script | Purpose |
|---|---|
scripts/main.ts | Image compression CLI |
Preferences (EXTEND.md)
Use Bash to check EXTEND.md existence (priority order):
# Check project-level first
test -f .baoyu-skills/baoyu-compress-image/EXTEND.md && echo "project"
# Then user-level (cross-platform: $HOME works on macOS/Linux/WSL)
test -f "$HOME/.baoyu-skills/baoyu-compress-image/EXTEND.md" && echo "user"
┌────────────────────────────────────────────────────────┬───────────────────┐ │ Path │ Location │ ├────────────────────────────────────────────────────────┼───────────────────┤ │ .baoyu-skills/baoyu-compress-image/EXTEND.md │ Project directory │ ├────────────────────────────────────────────────────────┼───────────────────┤ │ $HOME/.baoyu-skills/baoyu-compress-image/EXTEND.md │ User home │ └────────────────────────────────────────────────────────┴───────────────────┘
┌───────────┬───────────────────────────────────────────────────────────────────────────┐ │ Result │ Action │ ├───────────┼───────────────────────────────────────────────────────────────────────────┤ │ Found │ Read, parse, apply settings │ ├───────────┼───────────────────────────────────────────────────────────────────────────┤ │ Not found │ Use defaults │ └───────────┴───────────────────────────────────────────────────────────────────────────┘
EXTEND.md Supports: Default format | Default quality | Keep original preference
Usage
npx -y bun ${SKILL_DIR}/scripts/main.ts <input> [options]
Options
| Option | Short | Description | Default |
|---|---|---|---|
<input> | File or directory | Required | |
--output | -o | Output path | Same path, new ext |
--format | -f | webp, png, jpeg | webp |
--quality | -q | Quality 0-100 | 80 |
--keep | -k | Keep original | false |
--recursive | -r | Process subdirs | false |
--json | JSON output | false |
Examples
# Single file → WebP (replaces original)
npx -y bun ${SKILL_DIR}/scripts/main.ts image.png
# Keep PNG format
npx -y bun ${SKILL_DIR}/scripts/main.ts image.png -f png --keep
# Directory recursive
npx -y bun ${SKILL_DIR}/scripts/main.ts ./images/ -r -q 75
# JSON output
npx -y bun ${SKILL_DIR}/scripts/main.ts image.png --json
Output:
image.png → image.webp (245KB → 89KB, 64% reduction)
Extension Support
Custom configurations via EXTEND.md. See Preferences section for paths and supported options.