As of December 16th 2017 this extension is working again. As of the time of this writing I'm using Firefox Quantum version 57.0.2. The previous reviews are several months old.

You're probably going to need this to avoid star wars spoilers, and the like.

Makes Tumblr bearable again, thank you!

I got a new laptop and wanted to start using on Firefox on it. Downloaded Tumblr Savior for it and notice after the first use that it didn't save my blacklist. I thought it was just an error I made, so i loaded it again and noticed that it didn't even save my list when I tried to paste it. It used to work well, but i'm not sure what happened with it now. Shame.

doesnt work. Not only it resets blacklist I made but it blocks posts that DOESN'T contain any blacklisted tags.

Does exactly what it says. Removes ads and hides blacklisted posts. Tags for blacklisted posts are still visible so you can decide whether to view the post or not. I like how easy it is to restore a saved list since I need to refresh Firefox sometimes and that deletes all addons.

It worked great for me on Chrome for years, but the Firefox version is way too buggy. As someone else mentioned below, every time I close my browser my blacklist and options reset, and using the Load button to restore my settings doesn't even work. I'm going to have to start using Chrome again just for tumblr (assuming the Chrome version of the add-on still works), because there is absolutely no way I'm going back to having misinformation, fandom drama, unfunny annoying memes and frothing SJWs all over my dash.

so far, it's working, which two other options weren't

I installed this add-on today, and my queue is now full of ads.