https://www.avizstudio.com/tools/a2dimage/

A2Dimage is a scripted 3ds Max plug-in for adding simple 2D images with alpha channel to your 3ds Max scene. Script reads the height of the image from the end of the file name and on render generates automatically shadows based on alpha channel of the image. With this script you can render fast previews and final images with correct shadows with one render without compositing all individual elements later.