Github uses markdown language to add an image.
- Create a directory in the repository (e.g.
Image/) to store the image file. - Refer to that image by using markdown language

This Youtube video shows that html language, i.e. <img scr="/Image/MyPicName.png" width="100">, may be used to display and control of the size of the selected image.
I have tried it but the image did not even appear. Also I did not get any error message. Instead, I discovered that an invisible hyperlink exist in its place.
How should I control the size of a displayed image in a github repository?