I described it in the instruction pastebin: "... downloaded from qanon.pub using the "save as" option of the Opera browser after slowly scrolling through the whole website so that all images are loaded and displayed."

That takes a while (half an hour with a slow internet connection) and then I compare with previous versions to make sure no file is missing.

The Opera browser (on a 64-bit system) has a good memory management to handle such a large html page.

For other sites I use some spider software. For example I used "Cyotek WebCopy" in that case (wikileaks subdirectory): https://voat.co/v/GreatAwakening/3945805/

Q has posted mentions of "blackout necessary" and numerous times has repeated the importance of archiving everything offline.

If it's not something you can upload yourself it might disappear one day.

To the OP, I suspect with the detailed nature of that last post that there isn't going to be another post until a surge of newly red pilled people go to qmap and see that as top post. Meaning that now would likely be an ideal time to have a backup, get the archive back up to date.

There is no explicit message about that. But I think it's always a good idea to be prepared. Everything you save offline is under your control. Websites can be shut down or be attacked for a long time. For example the important german site "politically incorrect" (www.pi-news.net) is under attack since some days now. It's probably a DNS attack, that means the webserver probably is still running but it's not accessible because the DNS entries are messed up by someone. That could be done with all the Q sites, providers can block access to these sites etc.

I save everything important offline, even videos before yt deletes them. I found no simple way to save all the Q drops as e.g. a pdf file so I think there are not many complete backups of all the Q drops around. This is why I uploaded these zip files.

ditto