There’s been a lot of talk about Cloudflare in the context of GitHub Pages with custom domains and SSL (isaacs/github#156) over the years, and there was a burst of posts in that issue today due to a report that Chrome started blocking HTTP sites. From this comment:
Chrome now blocks http sites as of today, apparently even if the site does not have any forms, so GitHub pages with custom hostnames are officially unusable on a major browser. You have to dig through “advanced” settings and click on multiple “unsafe” links.
The discussion has been going for almost four years, so some information is stale, and it’s a little hard to follow on first glance. I thought this was a good time to organize the Cloudflare content in that issue, so I created GitHub Pages and Cloudflare.