You might have experienced that after choosing a photo for sharing as an story, the photo seems to be cropped or you just see some blank spaces on the story! It would happen because of your photo's dimensions!
If you want to get rid of the problem, it is better to check the Instagram story sizes to share the photo that fits the page.
In the following blog we are going to talk about:
. The Image and video sizes for Instagram Photos and Videos
. Image and video sizes for Instagram IGTV
https://instazood.com/blog/what-are-the-instagram-story-dimensions/