>>10758177i click the button next to the filename that comes up when you use 4chan x, it keeps filenames so i like that
then when my internet inevitably becomes wonky at certain hours of the day i organize those files to kill time. shit like reaction folders and folders for certain series
as for other sites, i use the pixiv toolkit extension for, well, pixiv to save all the images in a post.
for the other sites i barely use i just use the ol reliable rightclicksave