For those who are confused Waifu2x is an AI based image scaler and smoother. It can take a small image and make it dimensionally bigger as well as smoothing the edges. The end result is nice and pretty. Waifu2x is mainly intended for illustrations, anime images, drawings and comic type material. However it works on photos too. Below is an example.
You can download the prebuilt application form my google drive.
Download Waifu2x form google drive