<title>Bootstrap Image Responsive Circle Shape</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" crossorigin="anonymous">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" crossorigin="anonymous"></script>
<h2>Bootstrap Image Responsive Circle Shape</h2>
<img src="../../images/nature.jpg" class="img-circle" alt="Responsive Circle Bootstrap Image"/>