A style guide is a set of standards for writing and design that helps maintain consistency in communication. It outlines rules for grammar, punctuation, tone, and formatting, ensuring that all content reflects the same voice and style. Organizations often create their own style guides to align with their brand identity and values. In addition to writing rules, a style guide may include guidelines for visual elements, such as logos, colors, and typography. This ensures that all materials, whether printed or digital, present a cohesive look. Popular examples of style guides include the Chicago Manual of Style and the AP Stylebook.