You're unable to embed PDF documents in SharePoint Online
When you try to embed a PDF document anywhere within SharePoint Online, you receive the following message in the embed window:
The HTML cannot be inserted because this type of content is not allowed.
This issue occurs because it's not supported to embed PDF documents in SharePoint Online.
Still need help? Go to Microsoft Community.
Article ID: 3197279 - Last Review: 10/07/2016 13:26:00 - Revision: 1.0
Microsoft SharePoint Online
- o365 KB3197279