Requested feature overview description.
On post pages, with known sources and reverse search options, there should be that sites favicon to the left of the link.
Favicons are about the size of the text of the link by default, so this shouldn't effect the layout or formatting in any meaningful way. As the favicons are also really low in filesize, we could easily rehost these locally to avoid any potential technical issues.

Why would it be useful?
As site now has ability to put in up to 10 sources and we have more reverse search options than before, this would make it immidiately more visually clear that what sources post has and reverse searching would be easier to select desired site on the list, because right now the service name is in the middle of the link and all the names of links start and end the same way.
This would also give bit more overall visibility to sources which are extremely important for the posts and maybe get more users to utilize them.

What part(s) of the site page(s) are affected?
Post pages.

(Additionally get rid of Harry.lu reverse search as the website has been officially dead for months now and the importance of it has lessened thanks to native reverse search and sauceNAO, even if that site did help many a lot over the years)