How to make text larger in Firefox for macOS 12 Monterey

This section gives you step by step instructions on how to use the Zoom control to make text larger in the Firefox web browser in macOS 12 Monterey, with pictures of the screens to help.

1. The quickest and easiest way to use the Zoom control is through keyboard shortcuts. Press Ctrl and + (plus) while Firefox is active to zoom in. Press Ctrl and – (minus) to zoom out, or Ctrl and 0 (zero) to return to the default size.

2. You can also use the Zoom controls in the main Firefox menu. To find them, click the Menu button in the top-right corner of the Firefox window.

3. In the Zoom section, click the + (plus) button to increase the size of text and images. Click the – (minus) button to decrease the size of text and images. Press the Esc key to hide the menu when you’re finished.

4. To quickly return to the default zoom level, click the percentage indication in the address bar. 

5. You can set a custom default zoom level, so that every webpage opens with text at a larger size when you launch the browser. Click on the Menu button in the top-right corner of the Firefox window, then select Settings.

6. Scroll down to the Zoom section and choose a new percentage from the drop-down menu for Default Zoom.

7. Changing the default zoom level will also make images larger. If you only want text to be larger, tick the checkbox for Zoom text only.

Note: If this does not work it could be because your computer settings are managed by someone else (an IT department or administrator for example). If so, you will need to contact them to access these settings or for help.