In this case, it's not a matter of image formats, but simply a 404. https://github.com/norvig/pytudes/raw/5e745c392772d150b4146277e9061d44c1cc8d36/ipynb/map6.p

In this case, it's not a matter of image formats, but simply a 404. https://github.com/norvig/pytudes/raw/5e745c392772d150b4146277e9061d44c1cc8d36/ipynb/map6.png https://github.com/norvig/pytudes/raw/5e745c392772d150b41462... Here's map4.png: https://github.com/norvig/pytudes/blob/main/ipynb/map4.png https://github.com/norvig/pytudes/blob/main/ipynb/map4.png There doesn't seem to be a 5 or 6.