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.

Image 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.

baoyu-compress-image