The website uses the Colorful Image Colorization algorithm that’s being developed by a team at UC Berkeley led by PhD student Richard Zhang. We first reported on the technology back in March 2016, and now there’s an online demo that anyone can try on any photograph.
Simply paste a URL to a photo into the website and press the purple “Colorize It” button. After some processing and a short wait, the page displays a side-by-side comparison of the B&W and colorized photos that you can switch between.
Wasn’t that incredible? Amazing, right?
Try it out yourself at Colorize Photos.