How to view notes on touch screen

Android phones and tablets (tested on Chrome):

On a single image view:

1) Long press on image (touch the screen and hold the finger down)

2) If dialog to do further actions with the image opens, click "back" ( ◄ or ← or ⮐ or some other symbol), or click the screen somewhere outside of the opened action menu.

3) Now the small note boxes should be visible, and you can tap on each of them to see each of those notes. It is recommended to start from the notes on bottom. So, you can then proceed to notes above.

UPDATE January 14, 2020, the solution for iPad mini iOS 9.3.5:

On a single image view:

1) Long press on the image
2) Click anywhere on the page outside of the menu that opened, to get it disappear
3) Click anywhere on the image. Now instead of opening the image on full screen, the notes should appear.