For this little project I'm using Marked to parse the markdown content.

It's just 3 lines of JS in this case, most of the time invested here is in styling.
You'll find a text set as a sort of placeholder that serves the purpose of a quick markdown guide.

Here it goes:

You can edit the textarea and write whatever you want in markdown and it will be translated into HTML with the preview being at the right side (or at the bottom if you're using a smartphone).

That's all for today, hope you enjoyed I sure did doing that