Sans serif fonts are typefaces that do not have the small projecting features called "serifs" at the ends of their strokes. This design gives them a clean and modern appearance, making them popular for both digital and print media. Common examples include Arial, Helvetica, and Verdana. These fonts are often used for body text in websites and presentations because they are easy to read on screens. Their simplicity allows for better legibility, especially at smaller sizes, making them a preferred choice for many designers and typographers.