How to add an image to a gist: https://remarkablemark.org/blog/2016/06/16/how-to-add-image-to-gist/

how-to-add-image-to-gist.md

How to add an image to a gist

1. Create or find a gist that you own.

2. Clone your gist (replace <hash> with your gist's hash):

   # with ssh
   git clone git@gist.github.com:<hash>.git mygist
   
   # with https
   git clone https://gist.github.com/<hash>.git mygist

3. Change to your gist’s directory:

   cd mygist

4. Add and commit the image:

   git add tulip.jpg
   git commit -m "Add tulip to gist"

5. Update remote:

   git push origin master

See blog post.

tulip.jpg