product gallery images are not fitting within the frame due to irregular height and width of some images. Find a solution so that the entire image is visible in that frame. I mean no part of the image is outside the frame.
To enhance the mobile user experience, consider disabling the zoom feature and enabling full-screen viewing for gallery images. So that users can zoom manually by double tap and finger gestures.
For inspiration, review Amazon.in and Flipkart.com in both mobile and desktop modes. The zoom feature in desktop mode on these platforms is commendable, especially for single product presentations.