[littlestymaar]

> I am not aware of any Markdown tooling that does not support this.

Reddit surely doesn't, and I'd be very surprised if github did.

In practice, in any place you want untrusted users writing markdown stuff for formatting, you cannot allow arbitrary HTML for security reasons.

[gen2brain]

I often use <img> with "width" on GitHub, so that I do not have the scrollbars on the main page, and one can click on the image to see the original size. It is ugly, but what is the alternative in Markdown? Several images instead of one?

[thayne]

Github has a very limited subset of html that is allowed.

Slack doesn't allow html (although it also doesn't allow all markdown).

If you are converting to something other than html, such as a manpage, using html tags generally doesn't work.

[immibis]

Why's anyone still using Reddit? I heard they just locked down their API again, to verified developers now.

[littlestymaar]

Network effect, the same reason why the magnificent seven are worth more than a trillion dollar each.