that's the thing we don't know , sites like unddit used pushshift to archive reddit posts , vomments, etc, and its dead so these websites are effectively dead, so i don't think we can do it here.
the images are usually hyperlinks that could stay links.
and imgur started purging old images, where most reddit images are hosted.
when i want to search something i add after it the word 'reddit' to get good results , can i do the same with lemmy?, is lemmy indexed by search engines?