Forum:Show image from its URL on another website

I thought an image had to be uploaded before it could be displayed, but someone inserted a bare googleusercontent.com jpg URL in a page and it displayed the image (here). Is that documented somewhere? It seems to work for images from some sites but not others (I only tried a couple). JohnBeckett 11:11, May 17, 2012 (UTC)


 * There used to be a help page about that until Wikia staff obliterated it. I don't know the full list of allowed sites, but I know a few.
 * ImageShack
 * All Wikimedia Foundation sites (such as Wikipedia or MediaWiki.org)
 * Any Wikia hosted site
 * Here's an archvied version of the help page: http://web.archive.org/web/20090401210006/http://help.wikia.com/wiki/Help:Externally_hosted_images
 * Here's a whitelist: MediaWiki:External image whitelist. This list doesn't seem to include googleusercontent.com, so it might be outdated.
 * --Gardimuer { ʈalk } 14:35, May 17, 2012 (UTC)
 * Interesting, thanks. JohnBeckett 06:24, May 18, 2012 (UTC)