The resizing functionality will work only for the links corresponding to domains that we used for the SCA.
For clarification, if the image URL www.abc.com/image1 is available in the Netsuite then the resize functionality will work. And if it is not available in the Netsuite it will not work.
Sometimes, we used base64 to PNG image conversion in the code, here the resizing will not work.
Resize will not work for this;
URL= data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIA...