Bulk make images square on larger of sides (fill with white)?

Question

Image processing

Hello!
Such a question: I need to mass-produce square images from rectangular images: determine the large side and make the opposite side the same, filling the host with white space. The bottom line is that I can’t bring them to any one size, so any actions with specific sizes are not suitable. How can this be implemented?

Answer 1

Try XnConvert .
In actions - change the size of the canvas, like, what you need ...