The download gives you 4 ready-to-use Photoshop actions that automatically arrange a selected portrait into common passport size layouts. Most sets like this include variations for different print sheet sizes (e.g., 4×6 inches, A4, or 5×7), which is exactly what this one offers.
Always run the action on a duplicate layer, and make sure your document’s resolution is set to 300 DPI before playing.
For a few dollars, this action set is a steal. It won’t replace proper passport compliance tools (like checking shadows or ear visibility), but for layout and printing, it’s flawless. Highly recommended if you use Photoshop daily.