How do I resize image on product detail page

[testplay]

http://rtc.webcoclients.co.nz/edmonds-chocolate-pancake-mix-370g.html

all my image sizes are 330 x 330 px (width x height). How do I resize image on product detail page (above url) so image is not blown up like it is showing now please. Thank you in advance. 

[Sinisa]

Since you're using Smartwave Porto theme, you should be able to do resize here:

System > Configuration > Porto > Porto - Settings Panel -> Product View.

Here you have options:

- Keep Image Aspect Ratio

- Image Width (when Keep Image Aspect Ratio is no)

- Image Height (when Keep Image Aspect Ratio is no)

Try to change those values & clear the cache. Let me know if you succeeded.