How to Increase or Decrease Font Size in Firefox

When it comes to fonts, size matters, as typography plays an important role in learning, memory, attention, reading, and thinking.

Maybe you have an eye problem, or you prefer your very small or very large fonts – whatever it is, there is a font for you. Most devices and browsers will allow you to choose your preferred font and font size.

How to Increase or Decrease Font Size in Firefox

Also, you can change and manage your font settings at any time. Read on to learn how to change the font size in your Firefox browser.

 How to change the font size in the Firefox browser on the desktop

There are two easy ways to adjust the font size in Firefox on a desktop browser:

Method 1: Native Firefox Zoom

If you need to quickly zoom to a web page, this method can help you:

  • Open Firefox and click on the hamburger menu icon in the top right corner of the screen.
  • Look at the Zoom section of the menu.
  • Click on the minus icon (-) to make the font size at least 30 percent.
  • Click the plus sign (+) to increase the font size to a maximum of 500 percent.
  • Click outside the drop-down menu to exit.

Method 2: Change Firefox Font Settings

Want to change the Firefox font type and size on all the websites you visit? Follow these steps to get started.

  1. Open Firefox.
  2. Click on the hamburger menu icon.
  3. Click on the option.
  4. Scroll down for Fonts and Colors in the Language and Appearance section. The default font is Times New Roman, size 16.
  5. To change the font, click the Default Font drop-down menu.
  6. To change the font size, click the Size drop-down menu. You can choose between a minimum of nine and a maximum of 72.
  7. You can also click the Default Zoom drop-down menu to change the default zoom from 100 percent to 30 percent to 500 percent.
  8. If you only want to zoom in or out on the text while retaining the current display size, select the Zoom Text Only check box.
  9. You can click Advanced to choose a font for other languages, as well as set the minimum font size.
  10. By default, web pages set their own fonts and font sizes. You can change this setting by clearing the Allow pages to select your own fonts check box. Then click on Ok.

 How to change the font size using your keyboard and mouse

You can also resize the text using keyboard shortcuts as well as your mouse. This provides a quick solution when you need to increase or decrease the font size on a page.

Firefox will show a percentage in the address bar, indicating how far you’ve zoomed in or out. Note that this action increases the font size and display size.

  • Once you come to a web page, hold down the Ctrl key and move your mouse wheel up to increase the font size.
  • To reduce the font size, hold down the Ctrl key and move the mouse wheel down to reduce the font size.
  • Press Ctrl + 0 to return to the default font size.

Conclusion

If you change the font size in your Firefox browser, only the font size of the page content will change. However, if you zoom in or out to change the font size, the display size of all other elements on the page will also change accordingly.

So when you change the font size, decide if you want to change only the font size or you also want to change the display size. The right font size will help you reduce eye strain and increase your focus.