Baoyu Compress Image Agent Skill
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.
Install
one command, takes just this skill from the repositorynpx skills add https://github.com/JimLiu/baoyu-skills --skill baoyu-compress-imageThe instruction itself
7 sections, as written by the authorImage Compressor
Compresses images using best available tool (sips → cwebp → ImageMagick → Sharp).
Script Directory
Scripts in scripts/ subdirectory. {baseDir} = this SKILL.md's directory path. Resolve ${BUN_X} runtime: if bun installed → bun; if npx available → npx -y bun; else suggest installing bun. Replace {baseDir} and ${BUN_X} with actual values.
| Script | Purpose |
|--------|---------|
| scripts/main.ts | Image compression CLI |
Preferences (EXTEND.md)
Check EXTEND.md in priority order — the first one found wins:
| Priority | Path | Scope |
|----------|------|-------|
| 1 | .baoyu-skills/baoyu-compress-image/EXTEND.md | Project |
| 2 | ${XDG_CONFIG_HOME:-$HOME/.config}/baoyu-skills/baoyu-compress-image/EXTEND.md | XDG |
| 3 | $HOME/.baoyu-skills/baoyu-compress-image/EXTEND.md | User home |
If none found, use defaults.
EXTEND.md supports: Default format, default quality, keep-original preference.
Usage
${BUN_X} {baseDir}/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)
${BUN_X} {baseDir}/scripts/main.ts image.png
# Keep PNG format
${BUN_X} {baseDir}/scripts/main.ts image.png -f png --keep
# Directory recursive
${BUN_X} {baseDir}/scripts/main.ts ./images/ -r -q 75
# JSON output
${BUN_X} {baseDir}/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.
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How to use it
Take jimliu/baoyu-compress-image from the repository into ~/.claude/skills for personal
use, or into .claude/skills inside a project.
The agent identifies a skill by the name field in its header. Two skills with the
same name cannot sit side by side — one of them will be ignored.
The instructions reference npx.
Without those the skill loads but fails at the first command.