Rocket.Chat/packages/rocketchat-oembed/client/oembedImageWidget.html

<template name="oembedImageWidget">
	{{#if showImage}}
		{{#if parsedUrl}}
			<div>
				<a href="{{url}}" class="swipebox" target="_blank">
					<div class="inline-image" style="background-image: url('{{url}}');">
						<img src="{{url}}" height="200">
					</div>
				</a>
			</div>
		{{/if}}
	{{else}}
		{{#if parsedUrl}}
			<div class="image-to-download" data-url="{{url}}">
				<i class="icon-picture"></i>
				<div>click to load</div>
			</div>
		{{/if}}
	{{/if}}
</template>