libgd
libgd is a graphics library for the dynamic creation of images. It provides a C API for drawing and manipulating images in memory and is used by many applications to generate images on the server side without invoking external tools. The library supports several common raster formats, including JPEG, PNG, GIF, BMP, WebP, and WBMP, and can convert between formats during processing.
Key features include support for truecolor images, alpha transparency, drawing primitives (lines, rectangles, polygons), text rendering
Bindings exist for several programming languages; most notably, PHP integrates libgd through the GD extension, which
libgd originated in the 1990s as part of the GD project and has since been maintained by