Works on all sites, except xenforo lightbox galleries. If possible, please implement this.
Advantages: centers images (thus can be used to overlap with other hovering addons in case some file types on a site are not working with one or the other, for full coverage), plays sound of webm, has action keys for immediate saving images (unfortunately a bit hidden in the advanced settings: "Enable saving media with action key"), has action keys to flip and rotate image (and thus is doing functions for which separate add ons are not necessary), has a good block list feature, good interface, one can lock images, start them zoomed to the max, etc.

Hover Zoom+ has worked well for most sites I've visited (and thankfully still does), but I've recently encountered an issue where it doesn't zoom on anything while browsing Twitch. I can mouse over a stream, and it'll act like it's trying to do something, but then it just infinite-loops without actually zooming in on anything, and I don't know if it's something Twitch did recently or what.

UPDATE: It seems to be working properly on Twitch again. Struggles a little bit to get going from time to time, but it does indeed work now.

Simply love it. Used on chrome, now in FF. Thanks for awesome addon.

deserve a billion start for refusing to sell our data to big corp. Legend.

I HOPED THAT IT IS support more sites

The zoom mouse scrolling is finally fixed after years!

Useful in Plurk