To add a MetaVRse scene to your Tumblr, create a new Text post. Click the Settings gear in the top-right corner and choose HTML as the Text editor.
Copy/paste your model’s embed code from the MetaVRse Engine publishing window and into the body of your Tumblr update. Click Post to publish. (Note that switching back to Markdown or Rich Text may break the iframe code, so you should stay in HTML mode or finish the rest of your post in another mode first.)