Question about product extra photos display

Hello,

Can we see by ourselves the issue ? Because you have several products and we weren't able to find a product with your current issue.
And so get the issue will be difficult, but while waiting for your url link here is a test that you can perform : switch for a default template like ProtoStar.

If that solve your issue, maybe the issue is linked to your template or an override view, but before going more far about this we are awaiting your returns.
Regards

Hello,

Next time, you will have to use the Contact us form, by adding as you do an Url link to this topic.
Now, for your current issue I was able to analyze your Css code and follow me step by step :
- Around line 2, in your plg_jchoptimize, see my screenshot :

Your template restrict the height to 30px, and some other comand css constrain the width to be 300px, this why the image is stretched.
Remove height, to better apply our css on width, on the command shown in my screenshot.

Regards