I ran into such a question. How to realize the ability to share each image on the page of the gallery?
I decided to use the code for posting into Facebook and changed the path to the image in it. But it did not help.
Here's a website for you to see Edwin Burdis
Clicking on the share button publishes another photo.
You need to realize the opportunity to share each photo on this page. And also I'm looking for ideas how to share each photo in the Tumblr.