Flag to enable image caching

[Pezmc]

It would be great if instantclick could also start caching the images found in the body of the new document during the preload phase.

It could go through the new body find any img's, extract their src and load them hidden into the current dom.

I'm unsure if you could then rely on the browser cache when swapping the bodies, or whether you'd have to swap the img's in the new body with your caching images.

This should be a toggleable option to avoid using a large amount of bandwidth on image heavy pages (perhaps you whitelist the images?)

[dieulot]

Nah, this would be a bit too crazy! Sorry.

Even as an option I’m opposed against it because it would add code complexity and size for something that isn’t desirable for a many websites.

For fast images displays, if you’re not doing it already I recommend setting width and height in the markup (or CSS) and using progressive JPEGs.