Today morning, while my 55 years old father was reading a comment on his facebook profile, he yelled at me: “Alvin!! how can I increase the font size in firefox?? The font is too small!!”. In fact, on some web pages, the font size or text size is really too small that make the text difficult or simply impossible to read. This might somehow troubles some people who visited the site, especially old folks whose eyes are getting old. In this post, I will show you how you can increase or change the font size in Mozilla Firefox. If you’re using a different browser, please visit: how to change font size in Internet Explorer or how to change font size in Google Chrome.

How to Change Font Size in Mozilla Firefox?

Trick no.1: - increase change text font size in firefox

1. Open Mozilla Firefox.
2. Go to Tools from the menu bar and click Options.
3. Click on the Content tab, under Fonts and Colors, select your desired font size.

Trick no.2: - increase change text font size in firefox

If the above trick doesn’t work for you, it’s probably because of the particular website does not meet the proper design guidelines and their font sizes are “hard-coded”. This weblog, computertipsfree.com for some reason does not meet the accessibility guidelines. You can try to change the font size of this website and I’m pretty sure that it won’t work.

To change the font size of web pages which have hard-coded font size, we’ll have to override their font settings.

1. Go back to the Content tab, under Fonts and Colors, click the Advanced button.
2. Uncheck Allow pages to choose their own fonts, instead of my selections above.
3. Select your desired font size for Minimum font size, and then press OK.

Trick no.3: - increase change text font size in firefox

Another trick is to force zoom the entire website. To do so, hold CTRL + press the plus sign (+) or the negative sign (-) to toggle the zooming. If you don’t like to press your keyboard, you can use your mouse for zooming too. To do so, hold down the CTRL key and spin the wheel of your wheel mouse up and down. As you do so the text will either increase or decrease depending on which way you move your wheel.

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