I haven't used it either but it certainly sounds like it's open to anyone to use. As @chc mentions, it reads like you use a Worker to control access. So you can

I haven't used it either but it certainly sounds like it's open to anyone to use. As @chc mentions, it reads like you use a Worker to control access. So you can make your files public by simply not requiring any authentication. I've just been scrolling through their getting started guide. It looks promising: https://developers.cloudflare.com/r2/get-started https://developers.cloudflare.com/r2/get-started