Image Zoom has been designed with simplicity in mind. A right-click on any image on a website will open a context menu after installation of the extension with options to zoom in and out of the selected image.

Right-clicking and using the context menu is however not the only option to zoom images. Another possibility is to right-click and use the mouse wheel to zoom an image. That’s usually more comfortable than the context menu solution. Other options that are provided include page zooming, fitting an image to the screen size of the web browser or email client and custom zoom and dimension options.

Some add-ons can interfere with some of the options provided by the Image Zoom extension. Especially add-ons that make use of the mouse buttons, like the recently reviewed Multi Links add-on, can block some of the functions. Image Zoom offers some options to configure the mouse buttons that trigger the zooming. It can be downloaded from the Thunderbird or Firefox website.