How to copy images from websites that zoom the image when mousing over them?
In Firefox go to any product page at the AliExpress website and select a product.
Right-click the image and select Open Link in New Tab.
Switch to the new tab and you will see a large product image, and above it a gallery of thumbnail images, usually 6 thumbnail images, which can be clicked to view the product from different viewpoints. From the Firefox menu select Web Developer -> Page Source.
On the Page Source tab find the line that says
<div class="image layout-left">Under that line will be the links to all the original size product images on that webpage. If there is an image gallery that contains more than one image, there will be a list of images containing one link for each image in the image gallery. If there are 6 thumbnail images above the large product image, there will be 6 links to original size images in the list.
Open the link to the image you want to save in a new tab.
A new tab will open containing only one image in the center of the page surrounded by a dark gray background. Right-click on the image and select Save Image As... to save the image to your computer.