Use this skill whenever the user wants to compress, convert, resize, crop, or rotate images. Triggers on requests like "compress this image", "convert to WebP/AVIF/JXL", "resize to X pixels wide", "make this image smaller for the web", or any image optimisation task. Calls the mochify `squish` tool with the appropriate parameters.

Mochify — Image Compression & Conversion

Name: mochify
Author: getmochify

Use the squish tool to process images via the mochify.xyz API.

Parameters

file_path (required) — absolute path to the image file
type — output format: jpg, png, webp, avif, jxl
width — target width in pixels (height scales proportionally unless height is also set)
height — target height in pixels
crop — set true to crop to exact width×height rather than letterboxing
rotation — degrees: 0, 90, 180, 270
output_dir — directory to write the result (defaults to same directory as input)

Format guidance

Goal	Recommended format
Web photos	`avif` or `webp`
Lossless / transparency	`png`
Maximum compression	`jxl`
Broad compatibility	`jpg`

Tips

If the user doesn't specify a format, default to avif for photos and png for images with transparency.
If the user says "resize" without a format, keep the original format.
For "web-optimised" or "compress for web" requests, use avif at the user's desired width (or 1200px if unspecified).
Multiple files can be processed in sequence with separate squish calls.
Always confirm the output path back to the user after processing.