A serif font is a type of typeface that features small lines or decorative strokes at the ends of its letters. These embellishments, known as "serifs," help guide the reader's eye along the text, making it easier to read in printed materials. Common examples of serif fonts include Times New Roman and Georgia. Serif fonts are often used in formal documents, books, and newspapers because they convey a sense of tradition and reliability. In contrast, sans-serif fonts, which lack these decorative elements, are typically used for digital content and modern designs, as they appear cleaner and more straightforward.