HEIC (High Efficiency Image Format) is an image format that was developed for efficient storage of images on websites. HEIC offers a higher compression rate compared to other image formats such as JPEG or PNG, which means that images with HEIC are smaller and can therefore be loaded more quickly.

As the loading time of a website plays an important role in the user experience, the use of HEIC images can help to improve the performance and speed of a website. By reducing the file size of images, websites can load faster, resulting in an improved user experience.

However, not all web browsers and devices support the HEIC format, especially older models or devices running on operating systems other than iOS. It is therefore important to ensure that the website also supports alternative formats such as JPEG or PNG to ensure that all users can view the images correctly.