Sans-serif is a style of typeface that does not have the small projecting features called "serifs" at the ends of letters. This gives sans-serif fonts a clean and modern appearance, making them popular for digital screens and signage. Common examples of sans-serif fonts include Arial, Helvetica, and Verdana. Because of their simplicity, sans-serif fonts are often easier to read at smaller sizes, which is why they are frequently used in websites and mobile applications. They convey a sense of clarity and straightforwardness, making them ideal for conveying information quickly and effectively.