Ok I spent the past 3 hours trying to find out this annoying little thing. Spoiler alert: You DON'T NEED any Gatsby plugins. Stop reading these lies. (JK, some plugins allows you to enjoy Gatsby's image optimization feature, but unfortunately the documentation is too bad - I tried everything but nothing worked for me. Hence this original hack-y solution.)

All you need:

1. Create a folder in your "public" folder. Call it "images". Put your image files into this folder.
2. Refer to your image in your markdown file by typing this:

![](/images/image_name.png)

3. You need to commit your public folder. Run git add -f /public/images because usually your public folder is in git ignore