watermark.js

by Craig Martin

HTML

<script src="https://www.patrick-wied.at/static/watermarkjs/watermark.js"></script>
<img class="img_awesome" src="http://i.imgur.com/NVplDnt.jpg" alt="" />

JavaScript

$('.img_awesome').watermark({
    path: 'https://cdn.shopify.com/s/files/1/0647/4927/3302/files/shigeru_lash_and_brow_logo.png',
    gravity: 'nw',
    margin: 0,
    opacity: 0.3
});