Rafael Paulino

With this plugin you can place an iframe inside the TinyMCE text editor. 
You click a button in TinyMCE and a window appears to place the iframe data. 
Then just click on Ok and a shortcode is inserted with the iframe data and on the front the iframe is presented.
Com este plugin você consegue colocar um iframe dentro do editor de texto TinyMCE. 
Voce clica em um botão no TinyMCE e aparece uma janela para colocar os dados do iframe. 
Depois é só clicar em Ok e um shortcode é inserido com os dados do iframe e no front é apresentado o iframe.

Rafa TinyMCE Iframe

With this plugin you can place an iframe inside the TinyMCE text editor.

Greg Ross

A quick and easy shortcode to embed iframe’s that resize to the content of the remote site.
Auto iFrame shortcode is in the format of:
<pre><code>[auto-iframe link=xxx tag=xxx width=xxx height=xxx autosize=yes/no]
</code></pre>
Where:
<ul>
<li>link = the url of the source for the iFrame. REQUIRED.</li>
<li>tag = a unique identifier in case you want more than one iFrame on a page. Default = auto-iframe.</li>
<li>width = width of the iFrame (100% by default). Can be % or px. Default = 100%.</li>
<li>height = the initial height of the iframe (100% by default). Can be % or px. Default = 100%.</li>
<li>autosize = enable the auto sizing of the iFrame based on the content. The initial height of the iFrame will be set to “height” and then resized. Default = true.</li>
<li>fudge = a fudge factor to apply when changing the height (integer number, no “px”). Default = 50.</li>
<li>border = enable the border on the iFrame. Default = 0.</li>
<li>scroll = enable the scroll bar on the iFrame. Default = no.</li>
<li>query = pass the parent’s page query string to the iFrame. Default = no.</li>
</ul>
Note: Auto re-sizing of the iFrame for cross domain sites does not work, this is a security protection provided by the browser and there is no way around it.
Now supports (Shortcode UI)[https://github.com/fusioneng/Shortcake] (aka Shortcake)!

Auto iFrame

A quick and easy shortcode to embed iframe's that resize to the content of the remote site.

Rafa TinyMCE Iframe vs Auto iFrame