The amp-image-lightbox component allows the user to expand an image to fill the viewport.

Basic Usage

The amp-image-lightbox is activated using the on action on an amp-img element referencing the lightbox element's ID.

Captions

The amp-image-lightbox also can optionally display a caption for the image at the bottom of the viewport. This can either be the contents of the <figcaption> element when the image is in the figure tag...

... or the contents of the element whose ID is specified by the image's aria-describedby attribute.