ScaleIt is a tool that facilitates rendering 3D models at specific physical scales for printing. By selecting standard paper sizes, the add-on automatically adjusts the active camera's orthographic scale and the scene's output resolution. Users can define custom scaling factors relative to the chosen paper size, set the camera orientation to portrait or landscape, and configure the target DPI for print quality.

The add-on integrates into the 3D Viewport sidebar and includes an option to rename cameras based on the applied scaling properties. It assumes a default 10mm print border and a standard unit scale of one.