You fire up Firefox or Internet Explorer to surf the Web only to find the font is either huge or minuscule.
So, what just happened?
What you’ve most likely done is scroll your mouse wheel while pressing the Ctrl key. It’s easily done — and just as easily fixed.
A simple fix
Just hold down the Ctrl key and scroll your mouse wheel again.
Alternatively, you can reset the text size via the browser’s toolbar.
In Firefox, go to View » Zoom » Reset.
In Internet Explorer 7, go to Page » Text Size » Medium.
And in Internet Explorer 6, go to View » Text Size » Medium.
It’s a simple as that.
P.S. If you’re still having computer problems, then you should check out PC Health Advisor because it’ll sort your computer out in 3 mouse clicks.
SOURCE:http://www.utilitysoftwarereviews.com/web-browser-text-changed-size/