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.
A fast image processing library with low memory needs.
- libvips
- jpeg
- openslide
- imagemagick
Leptonica is an open source library containing software that is broadly useful for image processing and image analysis applications. The official github repository for Leptonica is: danbloomberg/leptonica. See leptonica.org for more documentation.
GRASS - free and open-source geospatial processing engine
Super fast C++ .PNG writer/reader
- png
- image-compression
- image-compressor
- data-compression
GD Graphics Library
A fast image processing library with low memory needs.