Clipping is a technique used in computer graphics to limit the rendering of an object to a specific region of the screen or viewport. It allows for the removal of any portion of an object that falls outside the defined region, resulting in a more efficient rendering process.

In HTML, clipping can be achieved using CSS properties such as overflow and clip. The overflow property determines how content that exceeds the dimensions of an element should be handled, while the clip property defines the visible portion of an element by specifying the coordinates of a rectangular region.

Clipping is commonly used in web design to create visually appealing layouts, crop images, and control the display of elements within a specific area. It helps in optimizing performance by reducing unnecessary rendering and improving the overall user experience.