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 digital content and signage. Common examples of sans-serif fonts include Arial, Helvetica, and Verdana. These fonts are often easier to read on screens, especially at smaller sizes, due to their simplicity. They are widely used in various applications, from websites to advertisements, because they convey a sense of clarity and straightforwardness. Many designers prefer sans-serif fonts for their versatility and contemporary look.