Fixed it (e621 etc) up to new version @ https://addons.mozilla.org/ru/firefox/addon/booru-slideshow-new/

Good stuff, but I really wish there was a Shuffle option or to reverse the order of the slideshow. Maybe a fade option as well?

Exactly what I was looking for

why does it need permission to downaload and read/modify download history?

This add-on works as described and does a great job of it! Unfortunately the new "obfuscated code" policy renders this and many other USEFUL add-ons unusable.

Amazing!

Hey man, mine won't save my settings I choose when I close the tab, like what booru to use and to keep auto-fit. Not a super big deal but not ideal.

Very useful and works well (most of the time, so long as there hasn't been a sudden API update on the sites). A few requests I have would be:

1. Different modes of auto-fit for people with different preferences (in particular, auto-fit showing the control, auto-fit showing control and preview list, and auto-fit image only).
2. Preview list showing the current and previous image (not a big deal, it's just a preference).
3. Sankaku Chan and rule34.paheal.net. Not sure how to do it exactly, but Sankaku Chan does have a mobile app and the mobile app Nori managed to do Rule 34 Paheal.

The extension is fine as it is, although I noticed the Firefox update rate is slower than Chrome's, but it'll be nice to have the option.

Охуенно хорошо.