What is what are images with no background called?

Images with no background are called transparent images or PNG images. A transparent image has no color or solid background and allows the underlying layer to show through. Transparent images are commonly used in web designing, graphic designing, and various other digital applications. PNG (Portable Network Graphics) is a popular file format for transparent images as it supports a high level of compression without losing image quality. These images have been increasingly popular as they can be easily used in different settings and website designs. However, it's important to note that not all images can be made transparent, particularly those that have a complex background or multiple colors.