Hi Gytis, sorry but.. do I know you from prestashop gitter? haha ok, here my answer. You may can use this https://github.com/thumbor/thumbor I know, is written in python, but you can run it in a sub domain and use the php library in you php backend :) we are using this in Laravel, works like a charm! Is really fast and super easy to install : https://nicolasmd.com.ar/links/?gi6jjA