WM Zoom is a jQuery plugin that creates a magnifier overlay on the image and displays the high definition image inside it. Also provides a config to provide Inner zoom functionality as you mouse hover on the image.
Download WM-ZOOM plugin for inner zoom - WM-ZOOM
Include CSS in head tag
<link rel="stylesheet" href="wm-zoom/jquery.wm-zoom-1.0.min.css">
HTML Code
<div class="wm-zoom-container my-zoom">
<div class="wm-zoom-box">
<img src="assets/img/small-image.jpg" class="wm-zoom-default-img" alt="alternative text" data-hight-src="assets/img/big-image.jpg" data-loader-src="assets/img/loader.gif">
</div>
</div>
Include JS before close body tag
<script type="text/javascript" src="assets/js/jquery-1.11.1.js"></script>
<script type="text/javascript" src="wm-zoom/jquery.wm-zoom-1.0.min.js"></script>
Add jquery code before close body tag and after above jquery pulgin
$(document).ready(function(){
$('.my-zoom').WMZoom({
config : {
inner : true
}
});
});