Whenever I link (https) a PDF using Embed, the card option works but not the inline embedding. The option is grayed out and when I hover over it, it says "This content doesn't support inline embedding."
I've seen StoryMaps use inline embedding for PDFs. When I use their PDF link for my StoryMap, the inline embedding option is available.
I'm assuming something about that PDF worked for embedding but something about mine doesn't.
PDF that worked: https://drive.google.com/file/d/1Ys7yOKHLXe4XHlGhVjaj2j45UEo58_WO/preview
Sample not working PDF: https://www.eastwestcenter.org/sites/default/files/filemanager/Research_pdfs/Hawaii%20and%20the%20US%20Affiliated%20Pacific%20Islands/NonNativeMammals%20Manager%20Final.pdf