How to make text larger in Firefox for macOS 10.15 Catalina

In this article

Using keyboard shortcuts to make text larger in Firefox
Using the zoom tool in the Firefox menu to make text larger
How to increase the default text size in Firefox

Using keyboard shortcuts to make text larger in Firefox

Press Ctrl and + (plus) to zoom in
Press Ctrl and - (minus) to zoom out
Press Ctrl and 0 (zero) to return to the default size

Using the zoom tool in the Firefox menu to make text larger

1. Select the Menu button in the top-right of the Firefox web browser.
   
2. In the Zoom section, select the + (plus) button to increase the size of text and images. Select the - (minus) button to decrease the size of text and images.
   
3. To hide the menu, press the Esc key on your keyboard.
4. To reset text and images to the default size, select the percentage indicator in the browser's address bar.
   

How to increase the default text size in Firefox

You can specify a default font size so that text is always larger when you use the Firefox browser. However, some websites don’t allow you to change the font size so these settings will not be work for all websites.

1. Select the Menu button in the top-right of the Firefox web browser.
   
2. Select Preferences from the menu.
   
3. On the Firefox settings page, scroll down to the Language and Appearance section.
4. Under Fonts and Colours, select the drop-down menu for Size and choose a new default size.
   

Note: If this does not work it could be because someone else manages your computer settings (an IT department or administrator). If this is the case, you will need to contact them to access these settings or for further help.