I'm not using a mouse on my laptop. Every once in a while the window zoom in or out because a finger is hanging over the touch pad. How do I zoom in and out in order to control the size in the window?
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hello JRStef, you can reset the zoom level of a page by pressing CTRL + 0 ('zero'). CTRL + -/+ decreases/increases the zoom.
You can set the mousewheel.withcontrolkey.action pref to 1 on the about:config page to avoid zooming the page by accident if you hold down the Ctrl key.
0 means "Do nothing"
1 means "Scroll contents"
2 means "Go back or forward in the history"
3 means "Zoom in or out the contents".