Thread:Project:Support desk/Is it possible to set a separate url for thumbs images?/reply (3)

Well, actually not fully solved. this $wgUploadStashScalerBaseUrl setting will disable mediawiki's own render function. Therefore the remote server should be able to get images from wiki and then scale it as wiki needs. If the remote server can not scale images, setting in $wgUploadStashScalerBaseUrl will be ignored.

Therefore, This setting can not improve CDN performance/ reduce expenses by set another sub domain for thumbs images.