What is responsive images (`srcset` and `sizes`)

Responsive images are essential for providing optimal user experiences across different devices and screen sizes. By using the `srcset` and `sizes` attributes in HTML, you can specify multiple image sources for different display conditions. This allows the browser to select the most appropriate image to deliver, enhancing performance and maintaining visual quality.

The `srcset` attribute is used to define a set of images for the browser to choose from, specifying different resolutions or sizes. The `sizes` attribute allows you to inform the browser about the expected display size of the image in different scenarios, facilitating better selection based on available screen width.