Magick

ImageMagick is a free, open-source software suite for creating, editing, converting, and displaying images. It supports 200+ formats and offers powerful command-line tools and APIs for automation, scripting, and integration across platforms.

The next-generation file converter. Open source, fully local* and free forever.

PHP Image Processing

A fast image processing library with low memory needs.

High-performance image manipulation for web servers. Includes imageflow_server, imageflow_tool, and libimageflow