What is what are transparent images called?

Transparent images are called PNG (Portable Network Graphics) images. PNG images are widely used in web design, digital art, and graphic design. They are designed to have a transparent background, which means that any part of the image that is not visible is transparent. This allows designers to overlay PNG images over other graphics, text, or backgrounds, without having a white or colored box around the image. PNG images also offer relatively high-quality compression, which means that they can be compressed without losing quality unlike other image formats like JPEG.