Shower VS Markdown-it

What do you mean by interactive? If you're talking slideshows, then stuff like reveal.js, impress.js, deck.js, or shower would do the trick. Source: about 2 years ago

Enhance does not natively support rendering markdown into HTML, which is out of scope for the project. Instead, we rely on markdown-it, an excellent JavaScript markdown parser that is endlessly configurable with plugins. As we use markdown in many different projects, we’ve created a node module called, Arcdown, which packages together our preferred conventions for parsing markdown files. - Source: dev.to / over 1 year ago

It looks like this is TypeScript using markdown-it? Source: almost 2 years ago

For my own static site generator, Jellybean, one feature of Docusaurus that I wanted to implement was full markdown support. This is because my static site generator previously only had partial markdown support, which is not very user-friendly. Thankfully, there are a some great open-source libraries which can provide full markdown support and I decided to use markdown-it for my project. - Source: dev.to / over 2 years ago

The problem is in a Jupyter Notebook markdown cell but it is reproducible here (with the html box checked). Source: almost 3 years ago

Showing them isn't limited by any API at least. They are directly taken from one of the "gif" sites, the source message for them looks like this . That is directly the syntax for markdown "Show inline image", just with a weirdly formatted URL. While the small inline image is then uploaded to reddit for faster access... Source: about 3 years ago