Image Compression

Compress, resize, and convert images using three CLI tools — caesiumclt (fast batch JPEG/PNG/WebP), rimage (codec-quality encoding + AVIF), and gifsicle (GIF/animation) — and show the user an interactive before/after preview in their browser so they can choose a compression level.

All commands run via the Bash tool. Scripts and references live in this skill's directory (paths below are relative to it).

Always check tools first

These tools are not guaranteed to be installed. Before using any of them, verify availability — never assume, never silently substitute:

scripts/check-tools.sh