IPython notebook extensions hide_input_all can toggle input cells in notepad, do they still show up in Gist?

I am trying to share some graphs I created in ipython / jupyter notebook with colleagues who don't need to see the code that created them. I have successfully (after some trial and misfortune) installed this extension https://github.com/ipython-contrib/IPython-notebook-extensions/wiki/hide_input_all which hides the code in jupyter notebook, but then when I create a gist link using extending gist_it or copying the .ipynb file to gist manually, it still shows all the code.

Is this how it should work, or am I missing something? Seems to me the time when I really want to hide all my input code with nbviewer when I want to share it? not in the notebook when I write the code ...