Originally designed by Fredrik Lundh in 1995, Python Imaging Library abbreviated PIL was the reference library for image processing on Python. Abandoned in 2009, the project's source code was taken over by Alex Clark, who published a new version called Pillow in 2010, definitively replacing PIL. Unlike other libraries offering only a few image processing methods, Pillow focuses almost exclusively on this field. It is therefore much more comprehensive and optimized for image manipulation.