@JonB

I did some searches. Do you think this and this are relevant? Also maybe cachedresponseforrquest?

I think the key is to find a way making nsrequest cache images. I ran share_cache.currentMemoryUsage() during the site loading. The memory usage is very small.

@Cethric thanks. Didn't even think of that

@0x77 I do not know if it helped this time but I often find that creating that minimal script removes all the cruft and allows you to see where the problem(s) lie. Sherlock Holmes once said something similar.

@JonB I changed the loading as you suggested and it works! Thanks a lot!

@ccc Thanks for your response. It worked well, except that I couldn't get it to work without displaying the WebView, which I was hoping to avoid. I ended up using the method suggested by @JonB to get around this.