Rotate and Zoom Image is a basic replacement for Image Zoom or Rotate Image, and already compatible with future versions of Firefox. It allows to rotate and zoom images directly on any website from the image context menu. Just right-click the image and see options at the bottom of the context menu. At this moment it may lack some features, like custom zoom ratios or rotation angles, but it aims to stay lightweight and predictable.
As I personally do not use this too often, please report any issues or feature request to the support page.
If you have an idea for an improvement or new feature for the add-on, please file it in a form of an issue. Please choose a well describing subject and describe in detail in the text field, what the feature should look like and in which cases you would use it.
If you encounter an issue, i.e. if the add-on does not work as expected on any website, please please file a new issue here. To ease the problem identification, please provide a detailed step to reproduce (click-by-click steps you have done, what happened and what should have happened, etc.) together with the URL, where the problem occurs.