Helps with PageSpeed and GTMetrix scores

While my images were already optimized, where Sirv made a difference was in the reporting of the amount downloaded. Images are 75% of the content on my front page, and by “outsourcing” where those images came from, PageSpeed and GTMetrix now see my webpage as about 300k in size instead of 1.2MB in size, which improves my rating score (and hopefully my SEO–I’ll revisit this review after some time to let people know if there is any change attributable to the plugin).