You need to activate the WordPrezi plugin.
For a prezi with a url of https://prezi.com/view/5N3TTfbIsN4sUGQ5N0pi/
you need to use this shortcode
[prezi url="http://prezi.com/view/5N3TTfbIsN4sUGQ5N0pi/embed" width="550" height="400" zoom_freely="N" ]
You can generated it here: WordPrezi ยท Embed Prezi into WordPress using the WordPress.org option. 13 Jun 2023, the site seems to be down at the moment, you can copy the above shortcode and change the url.
Hi John,
I’ve just posted a comment on the ‘Welcome to GlowBlogs Help’ page regarding help with Prezi embedding!
I’ve now found this, please disregard my previous post!
Thanks,
Mo