How to make the text larger in Firefox 3 for Mac OS X

This page explains step-by-step how to increase the size of text, or make the entire web page larger, in the Firefox 3 web browser running on Mac OS X systems. You can change the settings temporarily, or for every time you surf the internet.

Areas in this guide:

Note: The following abbreviations for keys on the Mac are used: Ctrl is used for the Control key, Apple is used for the Command key, and Alt is used for the Option key. For keyboard access, make sure 'Full keyboard access' is turned on - you can turn it on or off by pressing Ctrl + F1 at any time.

Video how to guide

Text version

Making the text larger in Firefox 3 for Mac OS X

Change the text size temporarily

To increase or decrease the magnification of text on a web page in Firefox, press Apple and '+' (plus) to make text bigger or Apple and '-' (minus) to make text smaller. To return the text to its original size, press Apple + 0.

You can also do this via the menu bar, as shown in Fig 1. Click on 'View' and then 'Zoom' in the drop-down menu, or press Ctrl + F2 to highlight the menu bar and press the right arrow key to open the 'View' drop-down menu, then use the down arrow key to navigate to 'Zoom'.

If you want to only change the text size rather than everything on the web page, make sure 'Zoom Text Only' is ticked. You can tick or untick it by clicking on it, or use the arrow keys to highlight it and then press Enter.

Click 'Zoom In' to increase the text size, or 'Zoom Out' to decrease the text size. Alternatively, use the arrow keys to highlight one of the size options and then press Enter. (In older versions of Firefox, you need to choose 'Text Size' in the drop-down menu rather than 'Zoom', then choose 'Increase' or 'Decrease'.)

Fig 1'View' drop-down menu showing 'Zoom' options

Set the text size for all web pages you visit

Step 1: Open the 'Fonts' window

Click on 'Firefox' in the menu bar, or press Ctrl + F2 to highlight the menu bar and then press the right arrow key, to open the 'Firefox' drop-down menu as shown in Fig 1.

Fig 1'Firefox' drop-down menu

Click on 'Preferences', or press the down arrow key to highlight 'Preferences' and then press Enter. This will open the 'Preferences' window.

If the 'Content' tab is not already selected, click on it or use the left and right arrow keys to select it, as shown in Fig 2.

Fig 2'Firefox Preferences' window showing the 'Content' tab

Under the 'Fonts & Colors' header, click the 'Advanced' button, or press Tab until it is highlighted and then press the Spacebar. This will open the 'Fonts' window shown in Fig 3.

Fig 3'Fonts' window

Step 2: Set a minimum text size for all web pages you visit

In the 'Fonts' window, click on the drop-down button beside 'Minimum font size' or press Tab until it is highlighted. Scroll up and down using the mouse or the arrow keys to select the minimum font size you want.

If you want to set specific font sizes, click on the 'Size' drop-down button next to, for instance, 'Proportional', or press Tab until it is highlighted. Use the mouse to scroll through the available sizes and click on the one you want, or use the up and down arrow keys to scroll through the sizes until the one you want is highlighted and then press Enter.

For information on the other font options you can customise here, see the How to change fonts in Firefox 3 guide.

To tell Firefox to use your specific font choices, untick the box beside 'Allow pages to choose their own fonts, instead of my selections above' by clicking on it, or press Tab until it is highlighted and then press the Spacebar to untick it.

Click on the 'OK' button, or press Enter, to return to the 'Preferences' window (Fig 2).

Click on the red 'close button', or press Apple + W, to finish and return to Firefox.

Note: If this does not work it could be because your computer settings cannot be changed due to local IT policies - contact your local IT support for further help.

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More ways to: Make your text larger

Make text larger on your computer

Change the settings in your operating system (for example, Windows Vista or Mac OS X)

Make text larger in applications

For example, Microsoft Word or Adobe Reader

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