What is picture with no background called?

transparent PNG

A transparent PNG is a type of image file that has no background color. Instead, the image appears as if it were floating on the page, with the background color of whatever is behind it showing through. This type of image file is commonly used in graphic design and web development when the image needs to be placed on top of another background or graphic. By removing the background from an image, it allows the image to be more versatile and easily integrated into different designs without any distracting elements around it.