User blog comment:Harbumz/Introducing Vignette, Wikia's New Thumbnailer/@comment-26408630-20150212043500/@comment-24880673-20150212070416

Here is an example (using the second image) of how you would scale that image to 150px using the new image format: http://vignette.wikia.nocookie.net/common/avatars/thumb/f/f7/9300598.png/revision/latest/scale-to-width/150. You should be able to do something similar with the other images. Just replace the "f/f7/9300598.png" part with a different image.

Hope that helps!