The `` tag in HTML is used to embed picture files in an HTML document. It is a container used to specify multiple `` elements to provide the browser with the option to load the most appropriate image based on the current layout or device (like a low-resolution version of an image for smaller devices, and a high-resolution version for larger screens).
It’s commonly used in responsive design when you want to provide different versions of an image to different devices or screen resolutions.
Here is an example of how it can be used:
```
```
In the above code, the browser will look at the `media` conditions in the `` tags from top to bottom, and use the `srcset` from the first `` tag that matches the current viewport width. If no `media` conditions are matched, the file specified in the `` tag’s `src` attribute will be displayed.
The text within the `alt` attribute is used as alternate text for users who can’t view the image. This could be because of slow connection speed, an error in the `src` attribute, or if the user uses a screen reader.
