Firefox has two hotkeys for zooming in and out of website pages. You can press Ctrl + – and Ctrl + to zoom out and in. However, you can’t zoom it and out of selected text blocks with those hotkeys. So try out the TextBlockZoom Firefox add-on that enables you to zoom in or out of selected text blocks via the context menu.
To add TextBlockZoom to Firefox , open this page on the Mozilla website. You can install the add-on from there. Thereafter, select some text and right-click to open the context menu below.
Note that the context menu now includes a couple of new options. You can select TextBlockZoom + and TextBlockZoom – to zoom in or out of the selected text. So select TextBlockZoom + to zoom in to the selected text as shown in the shot below.
You can also zoom in and out from selected images with this add-on. That might come in handy if the image isn’t entirely clear. Right-click an image on this dotTech page, and select the TextBlockZoom + option. That will expand the picture as shown below.
So this add-on gives you a couple of handy options for zooming in and out of text and images. As it’s a new add-on there might be further updates for it. It should work with Firefox 26.0 and any more recent versions of the browser.