I would like to fix the width of the image at 640 pixel when the image is biger than 640 (on Width)
for exemple:
If orginal_image_size >640 (pixel)
than resized orginal_image_size's Width to 640 (for display on detail page)
else if orginal_image_size <640(pixel) on this case, do nothing and display the image with his original size
anyone know do it?