Web wallpapers can leverage a number of extra features from Wallpaper Engine. You can add custom properties, build audio visualizers, and read the user settings to make sure your wallpapers behaves as the users wishes it to.
You can access the Chromium Devtools for your web wallpaper. First, set up a debugging port in the Wallpaper Engine general settings like port 8080, then open the Devtools in your favorite browser by navigating to http://localhost:8080.
After importing your web project you can publish it.