Q:

Image not embedded into a md file in GitHub

I am trying to enrich my repository with screenshots of my query outputs.
What I was planning was to add this images in a Readme.md file associated with each directory.
I followed all the approaches given in this questions without sucess (some of the answers are rather old and github may have change):
Add images to README.md on GitHub
And the one which gave me better results was this tutorial:
https://www.youtube.com/watch?v=nvPOUdz5PL4
So what I did was to create an issue, and added the link like this:
![pcaex1](https://user-images.githubusercontent.com/20033386/46548188-5b4f8380-c8df-11e8-8ba9-5f5322e4cbb5.jpg)

However this is the result:

I can only see the link. And I need to press that link to see the image itself. But is is not embedded.
Do you know if this feature was removed from GIT/md or if there is a new better approach.
Edit: Probably the problem is how I am saving this images in GitHub, since when I try to access them I get:

Is there any format/size/dimension restriction in github?

A:

Since you have a pcaEx1.jpg file in the same folder as your README.md, just use:
![](pcaEx1.jpg)

