A Visual Component Library is a collection of pre-designed user interface elements that developers can use to build software applications. These components can include buttons, sliders, text boxes, and other graphical elements that help create a visually appealing and functional user experience. By using a library, developers can save time and ensure consistency in design across their applications. These libraries often come with tools and documentation to help developers integrate the components easily into their projects. Popular examples of visual component libraries include Bootstrap, Material-UI, and Ant Design, which are widely used in web development to streamline the design process.