 <ol> <li>Use 'br'</li> </ol> <pre class="lang-js prettyprint-override"><code>$("#TextContent").wysihtml5({useLineBreaks: true, ...}) </code></pre> <ol start="2"> <li>Font-size</li> </ol> <pre class="lang-js prettyprint-override"><code> var myCustomTemplates = { custom1: function (context) { var s = "" s += '&lt;li class="dropdown"&gt;'; s += '&lt;a class="btn btn-default dropdown-toggle" data-toggle="dropdown" tabindex="-1" aria-expanded="false"&gt;'; s += '&lt;span class="current-color"&gt;Size&lt;/span&gt;'; s += '&lt;b class="caret"&gt;&lt;/b&gt;'; s += '&lt;/a&gt;'; s += '&lt;ul class="dropdown-menu" style="margin-top: 0px;"&gt;'; s += '&lt;li&gt;&lt;a class="fontSize" data-wysihtml5-command="fontSize" data-wysihtml5-command-value="fs5"&gt;5px&lt;/a&gt;&lt;/li&gt;'; s += '&lt;/ul&gt;'; s += '&lt;/li&gt;'; return s; } }; </code></pre> <pre class="lang-js prettyprint-override"><code> $("#TextContent").wysihtml5( { customTemplates: myCustomTemplates, "stylesheets": ["~/Content/wysiwyg/editor.css"] }); </code></pre> <p>editor.css</p> <pre class="lang-css prettyprint-override"><code>.wysiwyg-font-size-fs5 { font-size: 5px; } </code></pre>