No matter what settings you use, this extensions ALWAYS saves as a zip file. Extremely irritating.

イラスト名も作者名もファイル名に記録できない。それができないアドオンなら使う意味があまりない。設定ページが空白になる。ちゃんとしてほしい。

It barely even works anymore. Sometimes the resulting image packs downloaded are incomplete and outright missing pictures. Other times, with greater picture bulks, the extension says its finished downloading, but nothing actually downloads, and re-downloading and restarting does nothing. It feels like the developer doesn't even listen to any of these issues either, they feel obtuse and obstinate.

newest update does not allow hiding the bar by default anymore

plus it begs for 5 star reviews

Don't work WEBM

Eats up too much RAM, just by activating the add-on it adds up almost 1GB of RAM consumption by the browser (I only had about 7 pixiv tabs open). When you open many tabs at once it causes the browser to lag heavily and even crash. The crashes didn't happen before last Firefox update, not sure about the RAM consumption.

Doesn't work.