Firefox (Mac) Low Vision Settings

From Low Vision Accessibility Task Force

This page documents Firefox 69.0 (Mac) preferences that may pertain to people with low vision.

General Preferences

Language and Appearance

  • Fonts and Colors
    • Default font (select)
    • Size (9-72)
  • Advanced (Fonts)
    • Fonts for... (select) e.g. Arabic, Latin, etc
    • Proportional (select) Serif/San Serif & Size: 9-72
    • Serif (Select)
    • San Serif (Select)
    • Monospace (Select)
    • Allow pages to choose their own fonts, instead of your selections above (Checkbox)
  • Colors...
    • Text and Background
      • Text: (Default black) Choose a color from popup color picker
      • Background: (Default white) Choose a color from popup color picker
      • Use system colors (Checkbox)
      • Override the colors specified by the page with your selections above
        • Only with high contrast theme (Default)
        • Always
        • Never
    • Links
      • Unvisited Links: (Default blue) Choose a color from popup color picker
      • Visited Links: (Default purple) Choose a color from popup color picker
      • Underline links (Checkbox)

More info on fonts and colors can be found on Change the fonts and colors websites use

  • Browsing
    • Use auto scrolling
    • Use smooth scrolling
    • Always use the cursor keys to navigate within pages (to a keyboard to navigate within webpages)
    • Search for text when you start typing

More info accessibility features in Firefox can be found on Accessibility features in Firefox - Make Firefox and web content work for all users

Zoom (Not in Preferences)

  • Use menu button on the right (can adjust from 100 to 300%)

Zoom instructions

If you find that the max/min zoom level is not sufficient, you can change the zoom limit:

  • Type about:config in the Firefox location bar
  • Press enter
  • Select the "I'll be careful, I promise!" button.
  • Find the setting called zoom.maxPercent
  • Default value is : 300 (percent). Modify the value to any value higher than 300.

Keyboard Access (Not in Preferences)

To enable keyboard access for FireFox on a Mac consult: Keyboard Access.