So when trying to embed a PDF I found that there are a few annoying hangups with just doing it without a plugin.
At first I thought i could simply do something along the lines of a simple iframe such as this:
<iframe src="/wp-content/uploads/2021/03/Character-Entity-Reference-Chart.pdf" width="100%" height="480"></iframe>
However it seems this will only show a download button on Chrome Mobile (although it apart from that it works really well).
This was apparently an inherent flaw of Chrome Mobile thus I decided to resort to a plugin.
Thus came the question of which plugin to use.
Google Doc Embedder
Works on pretty much everyhting (but doesn’t always load annoyingly enough).
This is in my opinion the best, most up-to-date and easiest to use of the two (as shown here).Character-Entity-Reference-Chart
Doesn’t provide a download link unless you get the premium version.
But this can be done manually simply by inserting a file download button below.