Users of the Firefox web browser can zoom in and out of pages that are displayed in the Internet browser by using the menu or keyboard shortcuts to do so. The [Ctrl +] and [Ctrl -] keyboard shortcut will zoom in and out of a page which might sometimes be necessary to read all the text and information presented on the website.
The Mouse Zoom add-on for Firefox adds zooming to the mouse as well which has the advantage that it can be done easier than with the keyboard shortcuts or menu. A right-click and the use of the mouse wheel will increase or decrease the zoom on the specific page only. The zoom level will be remembered by the web browser so that the same view becomes available when navigating the website or accessing it at a later browsing session.
Mouse Zoom displays the zoom in the Firefox status bar. A left-click on the icon will open the add-on’s options which can be used to configure the onscreen display of the zoom during changes, the status bar icon and the zoom levels offered by the software.

The zoom level can be used to configure individual zoom levels that can be activated with the mouse wheel up to a maximum zoom level of 300%.
The add-on offers a handful of additional options including the option to reset the zoom level to the default value by holding the right-mouse button and left-clicking or pressing the middle-mouse button instead to hide the toolbars.
Mouse Zoom is compatible up to Firefox 3.5x. Users of Firefox 3.6x can force compatibility to make it work in their version as well.
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Firefox doesn’t need an add-on to zoom in and out of pages. As far as I know, it has always been possible to zoom in and out of pages by holding down the Ctrl key and rolling the mouse wheel forward or back. I have been using this feature for several years. The Mouse Zoom add-on does add new flexibility and control to this feature, but it NOT necessary for zooming in and out of Web pages.
Did the article say something different?
There is a simple way to zoom in and out and more in firefox with mouse with help of firegestures addon.
Change settings for click and scroll.
Cheers
I use a Cirque Touchpad mouse (http://www.cirque.com/desktoptouchpad/touchpad-mouse-overview.aspx) and can zoom by sliding my finger up the left side of the pad.
BUT – does zooming work well with an LCD monitor?
I had heard that zooming did not work well with LCD’s (which only display their native size font well).
This is why I keep using my old Sony 20″ CRT monitor.
Nope. Thats exactly what the article says. Gotta love the ones who comment before they read the post.
This is cool for me, because at times my mouse and keyboard are a good distance apart. Good find, Martin!