Do I use Markdown in the description?

I want to make certain words bold in the description of my items and put some images and gifs. I thought that Markdown is used to make this. I used different Markdown previewers and everything appeared the way I wanted but when I created the description none of the Markdown symbols worked. Markdown converts its symbols into html. Obviously, it didn’t work for me. Do I have to directly use html to make my words bold and enable other functions?
Thanks in advance for the help.

Use this tool-

So i have to use the html stuff :slight_smile:
Thank you.