Including the website where you obtained a digital image of a record is a key part of the citation process. Usually including the title of the database and the “main name” of the website (www.familysearch.com, www.ancestry.com, www.fold3.com, etc.) is sufficient. Web addresses that are 24,000 characters long as a part of a citation are not practical and they often change anyway.
Different websites may have images of varying quality and using more than one site may be advised. Not including the site you used may end up confusing you later if you need to go back and look at more images. You want to know where you got the best image.
Join me on one of my two research trips in the summer of 2019: