What is an interlaced GIF designed to do?

An interlaced GIF (Graphics Interchange Format) is designed to load images faster by displaying in two passes. This technique allows a preliminary low-resolution version of the image to load initially, enabling viewers to see the general composition of the image before it fully renders. This is particularly useful for images on the web where users might appreciate seeing content quickly rather than waiting for the entire file to download.

As the image continues to load, additional passes refine the quality of the displayed image, resulting in a smoother transition from a blurry image to the final, clear version. This feature enhances the user experience, particularly in environments with slower internet connections.

Other options focus on aspects such as reducing file size, displaying only monochrome images, or replacing other image formats like JPEG, but they do not apply to the concept of interlaced GIFs. Interlacing specifically addresses how the image is displayed rather than its size or color capabilities.