Change Page Zoom to Text Zoom

Firefox 3 introduced a new type of zooming that scales everything on the page, including the style, images, and text. That way when you zoom in or out it’s a little more like taking a magnifying glass to the whole site, but some people still prefer the old method where Firefox only adjusted the size of the text when zooming. You can re-enable the text-only zoom by going to View -> Zoom, and selecting the Zoom Text Only option.