format-convert

name

format-convert

description

Convert images between formats: PNG, JPG/JPEG, WebP, TIFF, BMP, GIF, HEIC, and AVIF. Performs high-quality lossless conversion by default. Handles alpha channel transparency automatically — compositing against a configurable background color when converting to formats that lack alpha support (JPG, BMP). Supports single-file and batch directory conversion with optional recursive subdirectory scanning. Uses ImageMagick. Use this skill whenever the user wants to: convert an image to another format, change image format, save as PNG/JPG/WebP/TIFF, convert HEIC photos to JPG or PNG, batch convert images, make images web-compatible, convert to WebP for web optimization, or anything involving image format conversion. Also trigger when the user mentions format names in the context of converting, exporting, or saving images.

Format Convert — Lossless Image Format Converter

Convert any image between PNG, JPG, WebP, TIFF, BMP, GIF, HEIC, and AVIF using ImageMagick. Lossless by default — preserves maximum quality and original dimensions.

Prerequisites

ImageMagick is required. For HEIC/AVIF support, ensure delegates are installed.

brew install imagemagick    # macOS
sudo apt install imagemagick # Debian/Ubuntu

How to use

Run the bundled script:

bash "${CLAUDE_SKILL_DIR}/scripts/convert.sh" <input-image> --to FORMAT [OPTIONS]

Options

Flag	Description	Default
--to FORMAT	Target format (png, jpg, webp, tiff, bmp, gif, heic, avif)	(required)