Convenient HTML stylesheet references for font icon CDNs.

icon-font-cdns.html

<!-- Font Awesome -->
<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css" rel="stylesheet" integrity="sha384-T8Gy5hrqNKT+hzMclPo118YTQO6cYprQmhrYwIiQ/3axmI1hQomh7Ud2hPOy8SP1" crossorigin="anonymous">
<!-- Use: -->
<!--    (fa-lg increases the icon in size realitive to container) -->
<!-- <i class="fa fa-camera-retro fa-lg"></i> fa-lg -->
<!--  <i class="fa fa-camera-retro fa-5x"></i> fa-5x -->

<!-- Linear Icon Webfont -->
<!-- <link rel="stylesheet" href="https://cdn.linearicons.com/free/1.0.0/icon-font.min.css"> -->
<!-- Use: -->
<!-- <span class="lnr lnr-code"></span> lnr-code -->
<!-- Cheat Sheet: https://linearicons.com/free#cheatsheet -->


<!-- Ionicons -->
<!-- <link rel="stylesheet" href="http://code.ionicframework.com/ionicons/2.0.1/css/ionicons.min.css" -->
<!-- Use: -->
<!-- <i class="icon ion-home"></i> -->
<!-- https://useiconic.com/open/ -->