Font Contrast
Improves webpage readability.
Font Contrast: Readability Add-on for Firefox
Font Contrast is a free, open-source Firefox add-on, dedicated to improving web page readability by tweaking text contrast, size, and weight. It offers an easy way to transform difficult-to-read text into clear and legible content without slowing down the browsing experience. The extension allows on-the-fly adjustments with a simple click or keyboard shortcut, along with per-website customization. Committed to software freedom, its source code is available under the GPL v3.0 license.
Add-on stats
Weekly download count: 32
Firefox on Android: Yes
Risk impact: High risk impact 
Risk likelihood:
Manifest version: 2
Permissions:
- http://*/*
- https://*/*
- storage
- tabs
- file:///*
Size: 203.00K
Ranking
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Add-on summary
Free and open-source add-on created to combat the trend of unreadable website designs. It's lightweight and fast, even on huge websites.
Features highlights:
- Turn hard to read text to black (or a darker shade)
- Enlarge small fonts
- Increase font boldness
- Easy to toggle: click on the icon or press a shortcut (default: Shift+F1)
- Address bar button to quickly set up website-specific options
User reviews
These summaries are automatically generated weekly using AI based on recent user reviews.
Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate,
spammy, or outdated. Pros
- Improves readability of low-contrast websites
- Allows customization of settings for individual sites
- Provides options for increasing text size
- Works well on lighter backgrounds
- Helps users with visual impairments
Cons
- Can block images on some browsers
- Default settings may require tweaking to be effective
- Icon is often invisible on dark themes
- Does not effectively change contrast for light text on dark backgrounds
- Interference with other extensions that modify styling
Most mentioned
- Customization options
- Readability improvement
- Issues with the icon visibility
- Need for better instructions or guides
- Problems when used with dark mode extensions
User reviews
by Kamal, 2024-09-17
I have this extension on both firefox and waterfox browsers. On firefox it has begun to block all images, but not on waterfox, both using identical Font Contrast settings.
by Firefox user 18578989, 2024-09-02
by island_in_the_sun, 2024-08-16
Add-on safety
Risk impact
Font Contrast requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk likelihood
Font Contrast has earned a fairly good reputation and likely can be trusted.
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