Can you see the images in posts #2 and #6?
Please can you answer with the browser and OS that you are using.
PS: My guess is that all browsers can show them inline, but some need a bit of configuration.
Safari on macOS: can see both.Safari on iOS: can see both.
Chrome and Firefox on iPad can see both.
SV VVC 170 - 170.4 bhp @ 7100 rpm - 142.4 ft.lb. @ 4900 rpm
See above. Also just checked in both mobile and desktop view modes, results pretty much the same.
Both perfect on iPad
Mac OS 10.14.6
No PDFs visible.
Just installed Chrome. On the same Mac running macOS 10.14.4: