How to increase or decrease the font size

in Mozilla Firefox, posted Oct 25th 2011

Learn how to increase or decrease the font size and size of the page in Firefox.

If you can’t read some tiny text on a website, or you mistakenly changed the browser font size, adjusting the font size is very helpful. There are a couple ways to do it.

The easiest way to increase the font size is to hold "Ctrl" then press the "+" or "-" key. Logically, the "+" key increases thezoom level while the "-" key decreases it. An alternative way to adjust the font size is to hold "Ctrl" and scroll the wheel up or down on your mouse to adjust the zoom; scroll it up to increase it, and down to decrease.

Pressing the "Ctrl" and "0" (zero) keys simultaneously will restore the default zoom level.