Hero Animated Switch
Full width, fixed height images - commonly known as "hero" images - are fine for web pages that are only displayed on computers and laptops. They aren't so good for responsive pages which will be viewed on tablets and phones.
This widget overcomes the problem by displaying the image at a fixed height above the break point and then switching to responsive height on tablets and phones in landscape mode. The image becomes 100vh in height when viewed on mobile phones in portrait mode to fill the height of the screen.
The image can also be set to fill the viewport height when viewed on computers by checking a box as can be seen in this example
Images
An image that is big enough to display at reasonable quality on a computer is obviously far too large to download on mobile devices. This widget inserts the images in three sizes - one for each device type. The images used in this example are 1600px, 1200px and 800px respectively.
Rather than insert the images in the background, the widget uses the HTML5 <picture> element so the image can have an alt text attribute to enter keywords for the search engines.