waifu2x

Single-Image Super-Resolution for Anime-Style Art using Deep Convolutional Neural Networks. And it supports photo.

Show full demonstration | Go to GitHub

Convert image:
Image choosing:
Or choose a file:
Limits: Size: 3MB, Noise Reduction: 2560x2560px, Upscaling: 1280x1280px.
Style:
Noise Reduction:
(expect JPEG artifact)
You need use noise reduction if image actually has noise or it may cause opposite effect.
Upscaling:
If you are using Firefox, Please press the CTRL+S key to save image. "Save Image" option doesn't work.