I don't know what are your plans for the addon but I see a problem since introducing offline images. Neither en.wikipedia.org and pl.wikipedia.org doesn't show these images while Xowa show.
You seem to have CSS turned off.
Please don't fill out this field.
Hey, thanks for the report.
Yeah, I'm working on this. It also causes a "reloading" effect when viewing images on a page.
FYI: I added embedding the URL in the HTML for v0.12.1.
Offline images should be working, but I haven't had a chance to verify. I'll take another look in a v1.1.* release
This was actually fixed as of v0.12.1.
v1.2.1 will have better functionality. It will actually retrieve the image and show it. Previously, it would only show the image if it had already been retrieved.