[dan15]

Note that you can't use a free Cloudflare account just for things like images, video and other binary files, as they'll suspend the account. It must be used primarily for a website, not content hosting. If you only want to use Cloudflare for files, you need a paid account.

[chx]

Nope, eastdakota confirmed it's fine as a b2 image proxy right here on HN.

[mkl]

Link: https://news.ycombinator.com/item?id=20790857

[mwambua]

Looking at his response, it seems like that's only true if you use workers... which you will end up paying for.