Macros for Retina Screenshots on the Forum

OK, the saga continues. The further I go, the more confused I become.

Check out the image in this post.

This image was uploaded by the KM8 Share button using Chrome.
Running Keyboard Maestro 8.0 on macOS 10.11.6.

If you look at the post markdown code, you see this for the image:
<img src="/uploads/default/original/2X/8/8e7a1b6215fd6e7fffa72b83bfa1316f0903503a.png" width="229" height="767">

Note the width of 229px.

All of the below is the same for both Chrome and Safari.

But if I measure the image in the post using the Mac screenshot tool, I get a width of 606px.

But, if I mouse-over the image in the post, it shows a width of 918px.

I don't understand any of the ratios:
229/918 = 0.25
606/918 = 0.66
918/2 = 459

So, I think the Discourse forum SW is really fu¢king with us. What do you guys think?
(sorry for my slang, but I am really, really tired of this issue).