What with all the Verizon stuff, I decided to back up my tumblr.
I found this. Link goes to the tutorial for the utility, but there are links in it to everything you need. Windows-specific. Following the instructions exactly, without using any extra options, it was very simple to do, and with my 2240 posts/~2 GB the utility took around 10-15 minutes to run (once you start it, it runs without your input).
It worked pretty well, overall.
Some notes.
It only grabs public posts. And only the post contents themselves, not notes (it shows note count; it just doesn’t go into the notes and save who liked, who reblogged, comments, etc.). You do not need to tell it your password, only url.
It doesn’t preserve photoset formatting, or your theme. It looks like you get up to fifty posts per page (next/previous navigation at the bottom if you had more than fifty posts in a given month). But while the resulting page is huge, it’s much easier on your browser than it would be on actual tumblr.
By default(?), it does not preserve videos that were uploaded directly to tumblr (as opposed to embedded from youtube). It just does a preview image in place of the video. Embedded videos work fine, though (as long as the video’s source doesn’t disappear).
By default(?), for audio posts, it doesn’t save the audio; it just hotlinks to it.
It looks like there are options you can use to back up video and audio, but I didn’t try them.
It looks like it does save images at full size, not display size.
Links (such as links to the original post, or links to tags) are preserved properly and . Tags are preserved.
It gives you a link to the actual post on your blog, for each post–it’s a circle/dot after the time and date.
While it was running it threw up some http errors, like so:
However, I checked a few of them, and they were in the proper places in the backup, so I guess it retries them.
ETA: It does incremental backups, too! Just do “tumblr_backup.py -i yourtumblrname” instead of “tumblr_backup.py yourtumblrname”. However, it doesn’t notice if you’ve edited a post that it previously backed up.
ETA 2: It does look under readmores.
With some of the recent events, I figured some of you guys may want to give this a try! It seems like the easiest and most efficient way to back up your tumblr.