ImageMagick

ImageMagick is a software offering a set of functions for creating, editing, composing and converting bitmap images.
It allows you to read and write images of various formats (over 200), including PNG, JPEG, GIF, WebP, HEIC, SVG, PDF, DPX, EXR and TIFF.

The program can resize, rotate, mirror, and transform images, adjust colors, apply various special effects, or draw text, lines, polygons, ellipses, and Bézier curves.

ImageMagick functionality is typically used from the command line, or you can use functions from programs written in your favorite language.