undoautoembed.html

<p>Test URLs</p>

<ul>
	<li><input type="text" value="https://placekitten.com/g/200/300"></li>
	<li><input type="text" value="https://twitter.com/reinmarpl/status/573118615274315776"></li>
</ul>

<textarea id="editor1" cols="10" rows="10"></textarea>

<script>
	embedTools.delayJsonp();
	CKEDITOR.replace( 'editor1', {
		extraPlugins: 'embed',
		height: 500,
		width: 600,
		embed_provider: '//ckeditor.iframe.ly/api/oembed?url={url}&callback={callback}'
	} );
</script>