Use Embedly to add rich media to your sites and apps.
After integrating Embedly, use analytics to understand and grow your audience.
If you have already copied the embed code, skip to the next step. If you haven't, you must do that first. Paste the web page URL in the Embed Code Generator, and copy the embed code.
Add a new post.
Click the '<html>' button in the editor. Paste in the card code.
That's it! Go ahead and save the post.
Make it easier for your viewers to get Cards for each of your posts - Add the Embed Button.
The Embed Button for Tumblr