xv is my favorite image viewer of all time. I loved how it launched immediately and made it very easy to see an image or browse a folder right from the command-line. 20 years later, computers are dramatically faster and such a fundamental task has become unbearably laggy.
It's the web, it's not supposed to get local files it gets web files and we don't ole for a reason. microsoft tried that with IE(activeX) and found out the hard way. but despite that it does a pretty good job linking and embedding javascript. to the point that they had to invent the whole CORS lunacy just to slow it down.