What is a "responsive image"?

A "responsive image" refers to an image that automatically adjusts to the size of the screen. This means that as the viewing environment changes—whether a user is on a mobile device, tablet, or desktop—the image will scale appropriately to ensure that it displays clearly and fits well within the layout. Responsive images are essential for providing a seamless user experience across multiple devices and screen sizes.

The implementation of responsive images often involves the use of CSS techniques like max-width: 100%; and HTML attributes such as srcset and sizes to allow the browser to select the most appropriate image based on the current display conditions. This adaptability not only enhances the visual experience but also optimizes page load times and performance by serving appropriately sized images for different resolutions.