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
Manifest V2
By: Francesco Fusco
Rating: 4.39 
(83)
Weekly download count: 34
Firefox on Android: Yes
Permissions:
- http://*/*
- https://*/*
- storage
- tabs
- file:///*
Size: 203.00K
Full description: See detailed description
Ranking
Other platforms
Not available on Android
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spammy, or outdated.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 by increasing contrast on low-contrast websites
- Customizable settings for individual websites
- Helps users with visual impairments, like macular degeneration
- Works well with additional extensions like uBlock Origin and NoScript
- Offers a text size increase feature
Cons
- The extension can block images on certain sites
- Occasionally does not work with specific websites (like zdf.de or Facebook)
- Default settings may not be effective without tweaking
- Icon visibility issues on dark themes
- Some users encountered issues with zoom and blacklisting features
Most mentioned
- Increases text readability by enhancing contrast
- Customizable options for specific websites
- Usability issues with certain sites
- Problems with icon visibility on dark themes
- Requires configuration to be fully effective
User reviews
Nice readability increase for common sites that stupidly use gray text. Usually works and I forget it's running. The occasional site can't have its text darkened. Working fine with uBlock Origin and NoScript on Android.
by Blargg, 2025-02-22
Works, but always kills videos at www.zdf.de
by netcat, 2025-02-19
by 远离中共邪教快退出党团队, 2025-02-13
Add-on safety
Risk impact
Font Contrast requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk impact analysis details
- Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood
We don't have sufficient data to confidently determine the risk likelihood of Font Contrast. Use it at your own risk.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
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