robwierzbowski/jekyll-picture-tag — pull request #55 by btobolaski (2014-11-04 01:58:50+00:00)
Title: Greatly speed up jekyll builds with no images to generate

By not opening the image before it is known if the image needs to be resized, it cuts off a great deal of time from a build with all of the images already generated. In my case, it cuts down the build time from 15 seconds to 3 seconds.