Is it possible to make browsers avoid showing you sites from a customized list within the search results?

Is it possible to make browsers avoid showing you sites from a customized
list within the search results?

I hate it when some sites appear again and again within my google (or any
other search engine) list.
For instance, look in google images for "samurai soldier with sword". The
list is plagued with sites trying to sell you such images. You can combat
this by adding their names preceded by a minus sign every time you do a
search. But the list can be enormous, and repeating the process every time
is really annoying, tiring, and time consuming:
"samurai soldier with sword" -depositphotos.com -graphicleftovers.com
-123rf.com
Is not there any firefox plugin or something that allows me to add
"123rf.com" just once and for all in some kind of filter list, and from
that moment never see it again in any of my future search results, as if
the site had completely wiped out of existance?