How to Change the Default Font in Firefox

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Last Updated: March 10, 2025

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• Changing Fonts for Pages
|
• Changing Fonts for All Web Pages
|
• Q&A

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Mozilla Firefox is a fully customizable web browser. You can customize its appearance, like color and themes, to suit your taste. One of the features you can customize in Firefox is the default font. Most browsers come in standard Times New Roman font. In case you’re getting bored or just want to make things a bit lively while you’re surfing, changing the font can be one of your options.

Steps

Part 1

Part 1 of 2:

Changing Fonts for Pages

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This will only change the font for pages and websites with no preset fonts.

1. 
   1
   Open Mozilla Firefox. Double-click the shortcut icon on your desktop to launch the browser.
2. 
   2
   Click on the "Menu" button. The Menu button is on the upper-right corner of the screen.

   • For older versions of Firefox, click on Tools on the menu toolbar on the upper part of the window.
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3. 
   3
   Select "Options." This will bring up the "Options" window.
4. 
   4
   Click "Content." Here you’ll find different options for changing how fonts are displayed on the browser.
5. 
   5
   Click on the "Default Font" drop-down box. This will show a list of fonts you can choose from. Just scroll down and select the font you want.

   • If you want to change fonts for all websites, proceed to the next part.
6. 
   6
   Save changes. Just click on "Okay."
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Part 2

Part 2 of 2:

Changing Fonts for All Web Pages

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1. 
   1
   Click on the "Advanced" button. After choosing the font you want, don’t save just yet. Click on the Advanced button next to the Font Size button. This will open the advanced options for fonts.
2. 
   2
   Uncheck “Allow pages to choose their own fonts, instead of my selections above.”

   • Websites have their own predefine fonts. If you don’t uncheck this setting, the default font you set will only apply to pages and websites that don’t have a preset font.
3. 
   3
   Save your changes. Click on "Okay" to save the advanced settings changes. Once on the "Content" tab again, click on "Okay" to save all the changes you made.

   • Visit any website you have in mind. You’ll notice that the fonts have been changed to the style you’ve selected.
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Community Q&A

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• Question

  How do I change the default font in Firefox e-mail?

  

  Community Answer

  Changing the default font in the entire Firefox browser will also affect the font in Firefox e-mail! So here is how to change fonts in the Firefox browser as a whole. First, make sure there is an internet connection. Then open a Firefox browser. From the top right-corner, click the three horizontal lines. Click on "Options". From the page that opens up, on the left side select "Content". Under "Fonts and Colors" will be a drop-down menu where you can change your Font.

  Thanks! We're glad this was helpful.
  Thank you for your feedback.
  If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow

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  Not Helpful 11 Helpful 1
• Question

  How can I add a new font to the list of options?

  

  Gorden Freeman

  Community Answer

  As your phone, you can download it from store or use *.ttf reader to install new fonts. You can also download fonts from Office Suite, for example, and install it on the software and configure it on your phone. These tips are a general rule because systems are different and devices are not all compatible with external fonts.

  Thanks! We're glad this was helpful.
  Thank you for your feedback.
  If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow

  Yes No

  Not Helpful 0 Helpful 0
• Question

  How do I change the font size for the bookmarks on the toolbar?

  

  Community Answer

  Start > Settings > Make text size bigger. Start > Settings > Make text size bigger. Start > Settings > Change the size of text, apps, and other items > Scale and layout. Start > Settings > Make everything bigger > Make everything bigger.

  Thanks! We're glad this was helpful.
  Thank you for your feedback.
  If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow

  Yes No

  Not Helpful 1 Helpful 0

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