lazyImgSrc
Attribute of the image that holds the real src. Can be set to ["lazysrc", "removeProp1,removeProp2"] to remove image properties.
Example 1:
"lazyImgSrc": "data-cfsrc"
Get the URL from "data-cfsrc" and set it to the image src.
Example 2:
"lazyImgSrc": ["data-lazy-src", "removeProp1,removeProp2"]
Sometimes the correct src is overwritten by another property that must be removed.