I needed resizing images in InkDrop and I found the html is a solution and it is working but when I turn of and turn on the app again I can see this error:
Thank you for the report.
That’s because embedded images are loaded and cached as markdown renderer find  but it does not check <img> tags.
In the new version, it renders images in the different way and I confirmed it works fine with img tags.
So please wait for the new version rolled out!