Hello Friends,
i have 200 products in my website, and for them . i have uploaded my all images to /images folder. but when i go to my website and open the product page, my product main image is good. and in the bottom more images for my product are resized to 64x64, but when i save that thumbnail image, it size is 400x400.
i am using two kind of images.
image.jpg
image_01.jpg


I want in my website all small images should be 64x64 and size around some kb, when some one click on it then large image open 400x400 pixles. and product main image should be also 400x400pixles for faster loading my website.

here is my website.

Please help.

www.3drevolution.org