Why put the useless icon on my toolbar? It can't even be pulled off by "customize toolbar"! Oh well it does what it says.

It does the job, but it doesn't work with "Don't Accept image/webp" extension, meaning that if you try to save opened JPG file it will save as webp. Ultimately decided to not use this extension because of this - being able to save JPGs is No.1 priority for me, even if it means dealing with Reddit's clunky interface.