Untitled

dabblet.css

div
{
	position: relative;

	width: 400px;
	height: 400px;
	
	border: 1px solid red;
}

div img
{
	position: absolute;
	left: 0;
	top: 0;
	bottom: 0;
	right: 0;
	background: red;
	
	height: auto !important;
	width: auto !important;
	display: block;
}

dabblet.html

<div><img src="http://i74.carguru.ru/6/63/56306/1/0.jpeg" /></div>

settings.json

{"view":"separate","fontsize":"100","seethrough":"","prefixfree":"1","page":"all"}