A single-column layout is a design format that presents content in one vertical column. This layout is commonly used in websites, blogs, and printed materials, making it easy for readers to follow the text without distractions. It emphasizes simplicity and clarity, allowing for a straightforward reading experience. This type of layout is particularly effective for mobile devices, where screen space is limited. By using a single column, designers can ensure that content is easily accessible and visually appealing. Popular platforms like WordPress and Medium often utilize single-column layouts to enhance user engagement and readability.