What is pictures with no background called?

"transparent images"

Transparent images, also known as PNG files, have no background and allow for the image to blend seamlessly into any design or background. They are commonly used for graphic design, website design, and digital art. Transparent images are saved in a format that preserves the transparency of the background, allowing for a clean and professional look. Whether it's a logo or a product image, transparent images can add a level of sophistication and elegance to any design. Additionally, the lack of a background allows for more flexibility in terms of placement and layout, making it easier to create visually appealing and professional-looking designs.