What is a Srcset?

Srcset is an HTML attribute used to specify different image sources for different display sizes and resolutions, helping websites display images in a responsive way. It allows the browser to choose the best image based on the user's device characteristics, such as screen size or resolution. This is particularly useful for ensuring that images look sharp and load quickly on devices with varying screen sizes, from small mobile screens to large desktop monitors.

For example, with the srcset attribute, you can provide multiple image files for different screen widths or pixel densities, so the browser will automatically select the most appropriate one. This reduces loading times on mobile devices and ensures that high-resolution images are shown on devices with high-density displays.