bogdan

Embeds are needed to embed video from youtube or to embed Google Map or just to embed content from external page. 
WordPress removes embed when you switch from “HTML” to “Visual” tab because of the security reasons. 
So you can embed object code using this shortcode <code>[iframe src="http://player.vimeo.com/video/3261363" width="100%" height="480"]</code>.

iframe to embed

Embeds are needed to embed video from youtube or to embed Google Map or just to embed content from external page.

Dan Rossiter

This plugin, like most things useful, grew out of a need. I had a <a href="http://www.prezi.com/recommend/qv1ms7qvtplw" rel="nofollow ugc">Prezi</a> 
and I had a WordPress blog. I Googled for a few hours, trying to find a way to embed one within the other, and found some 
dirty hacks that ended up not working, as well as a plugin or two that didn’t work, or only half worked. When I realized 
that there were no good solutions for this issue, I decided to create one.
This plugin is based on simplicity, making it extremely robust. On the back end, it is actually only a few lines of code. 
It takes the embed code that Prezi provides when clicking the share option through their site and simply inserts the 
necessary values that are needed to render a working Prezi.
I hope that you all find this plugin as useful as I have!
If this plugin has been helpful, please take a moment to 
<a href="https://wordpress.org/support/view/plugin-reviews/prezi-embedder#postform" rel="ugc">rate it</a>!

Prezi Embedder

This plugin allows the user to quickly & easily embed a Prezi in WordPress site by directly implementing the published iframe embed code.

iframe to embed vs Prezi Embedder