Wireframes are simple visual representations of a website or application layout. They serve as a blueprint, outlining the structure and elements such as buttons, images, and text without focusing on design details like colors or fonts. This helps designers and developers plan the user interface and user experience effectively. Creating wireframes is an essential step in the design process, allowing teams to visualize how users will interact with the product. Tools like Sketch, Figma, and Adobe XD are commonly used to create wireframes, making it easier to collaborate and iterate on ideas before moving to the final design phase.