retina-dom-to-image/spec/resources/pixeldata/dom-node.html

A fork of the dom-to-image library that outputs an image for higher DPI screens

<div id="dom-node">
    <div class="pixel top left"></div>
    <div class="pixel top center"></div>
    <div class="pixel top right"></div>
    <div class="pixel middle left"></div>
    <div class="pixel middle center"></div>
    <div class="pixel middle right"></div>
    <div class="pixel bottom left"></div>
    <div class="pixel bottom center"></div>
    <div class="pixel bottom right"></div>
</div>