What is it called when a picture has a transparent background?

When a picture has a transparent background, it means that the background of the image is see-through and can display the underlying layers or the background color of the website/application it is being used on. This allows for more versatile and flexible use of the image as it can be seamlessly integrated into different designs without leaving an unsightly white box around it. Images with transparent backgrounds are commonly used in graphic design, web design, and in creating logos, icons, and other digital graphics. They are usually saved in file formats such as PNG, GIF, or SVG, which support transparency.