Image Zoom

Image zoom is enlarging different photos to different sizes- some to almost nothing and some to double the size. Why would this happen.

https://primequalityproducts.com/rejuvenol-after-keratin-treatment-conditioner-10oz.html

No Change

https://primequalityproducts.com/rejuvenol-after-keratin-treatment-conditioner-10oz.html

double size

Thank you

I did not see a difference between the two.

The original image sizes should all be the same if you want the "zoomed" image sizes to be the same.

jimmyod- sorry. no difference because the second one is exactly the same url My Mistake

Please see:

https://primequalityproducts.com/rejuvenol-calrifying-shampoo-24oz.html

By same size do you mean px X px , or px/in. or same kb?

I thought that if it enlarges say 50% then each image should be 50% larger than its original. Is that not the way it works?

Thank you