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Embedly is a fantastic service that helps content sites have very easy-to-use embeddable content. Paste a link to a YouTube video, get the actual YouTube video, not just a link. We're a provider on Embedly, so this is true for CodePen now. Paste a link to a Pen, get the actual Pen, not just a link.
For instance, now, if you're drafting an article on Medium and you drop in a link to a Pen, you'll get an embed!
Anywhere that supports Embedly, supports CodePen embeds now! If you blog with WordPress, you can open up that gate as well.
Embedly essentially makes oEmbed easier to implement. It literally uses our oEmbed endpoint.