Mozilla Firefox - improving accessibility

Introduction

This guide shows you how to customise Mozilla Firefox to meet your accessibility requirements.  The changes you make to font, font size and colours will be applied to all web pages you visit.  You can change any or all of these options together or independently. 

Regardless of those settings, you can also temporarily change the magnification of any individual web page at any time.

Switch off pre-set fonts and colours

To customise your view of web pages using Mozilla Firefox, first you must switch off default settings for fonts and colours.

To switch off pre-set fonts and colours:
1. From the toolbar at the top of the Firefox browser window select Tools | Options. The Options dialogue box opens

Options

2. In the Options dialog box, select Content

3. In the middle Fonts & Colours section, click Advanced 

Options

The Fonts dialog box appears.

4. Untick the box for Allow pages to choose their own fonts, instead of my selections above

Font - Advanced Options

5. Click OK. The Fonts dialog box closes, returning you to the Options dialog box

6. Click Colours. The Colours dialog box opens

colours

7. Click OK and OK again to close all dialog boxes. Colours, font styles and sizes in all websites you view are changed to basic ones which you can then customise by following the steps below

Changing the default font and font size

Once you've switched off pre-set font settings, you can set a default font of your choice.

To change the fonts on web pages

1. Click Tools | Options. The Options dialog box opens

2. Click Content

3. Under Fonts & Colours select your preferred default font from the drop down list

Default font

4. Next to the Default font box, select your preferred font size from the drop down list

5. Click OKWeb page text will be changed to the font and font size you've chosen

Changing colours

You can change the colours of the fonts, background and hyperlinks to those you are most comfortable with.

To change web page colours:

1. From the toolbar at the top of the browser window select Tools | Options. The Options dialogue box opens

2. On the toolbar across the top of the dialogue box, select Content

3. In the middle Fonts & Colours section, click Colours. The Colours dialogue box opens

Font and Colours

4. To change the text and background colours, click to untick the Use system colours box

Colours Options

5. Customise any or all of the four colour boxes by clicking on each in turn and selecting the colour of your choice

6. When you have customised each of the colour box options as desired, select OK. The colours on the webpage change to those you have chosen

Disabling images

You can disable an image and view only its alternative text instead.

To disable images:

1. From the toolbar at the top of the browser window select Tools | Options. The Options dialogue box opens

2. Click Content

3. Untick the Load images automatically box

Load images automatically

4. Select OK

Note: If images are not disabled, you may need to refresh your page either by pressing F5 on your keyboard or by clicking the refresh button in the toolbar at the top of the browser window

Magnifying a Web Page

Regardless of font size settings, you can temporarily increase or decrease the magnification of any individual web page at any time.

To change the magnification of a web page:
Hold down CTRL and press + or  CTRL and - to increase or decrease font size.  (Pressing CTRL and moving the mouse wheel has the same effect.)

OR

Alternately, use menu options to change magnification:
1. From the toolbar at the top of the browser window select View | Zoom

Zoom Options

 

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