Very useful, just found out that i can "pin" the add-on to the button bar - now, i can simply page through the flipping modes. Great!

This is my favorite extension ever!!! I'm an artist and I spend hours scouring the internet for reference images and sometimes I don't want to download +10 images in order to manually flip them to the correct orientation. This solves so much time, thank you so much!

Edit: After 5 months of usage, I've discovered that the plugin has a browser breaking bug that will prevent you from logging into secure sites such as Canvas via Firefox. It was an issue I was encountering for months and couldn't figure what was causing said issue, until I manually enabled and disabled each plugin and discovered that this one was the culprit. I'll still use it, because it's very helpful, but do disable it for security!