Hi Sipos T
Yes Pillow library could be very slow , i could make a try using python + imagemagick , but i need to check the code first you say its just and automation tool for open, save, resize and transform images and you also dont mentions that include a GUI or other elements that bring certain complexity to the code, so yes i could look your code and implement the solution with imagemagick after this you can check if this works for you and if so make the payment i trust in your 5 star reputation