This is a friendly API for https://github.com/nothink/docker-waifu2x-converter-cpp

Fell free to star an original Waifu2x repo: https://github.com/nagadomi/waifu2x

To convert file - just send a multipart upload body to POST /convert and receive the file.

Example API is here: https://waifurun-64l7ehzjta-ue.a.run.app/

Warning - conversion using CPU is really slow. It will take ~250 seconds to convert FullHD into 4K image.