Origin private file system is supported in all modern browsers. That does make sharing the models between origins difficult at best, but for one origin works fi

Origin private file system is supported in all modern browsers. That does make sharing the models between origins difficult at best, but for one origin works fine. And in any case it's easier to direct users to install Chrome (or preferably Chromium) or instruct drag&drop than doing the brittle and error and bitrot prone virtualenv-pip-docker-git song and dance.