Features & Capabilities
User Growth & Download Statistics
- By:
- Francesco Fusco
- Daily users:
- 841 -3
- Rating:
- 4.38 (88)
- Version:
- 1.6.1 Last updated: 2024-01-14
- Version code:
- 5677339
- Creation date:
- 2017-07-29
- Risk:
- High risk impact Low risk likelihood
- Permissions:
- Size:
- 198.24KB
- Full description:
- See detailed description
- Source:
- Firefox Add-ons Store
- Data ingested on:
- 2026-06-19
- Compare stats and ranking:
- Font Contrast vs Font Contrast Improved
- Font Contrast vs Fix Contrast
- Font Contrast vs Text Contrast improved
Ranking
For Developers
Contact the developer
Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
User Reviews
Pros
- Significantly improves readability by increasing contrast on low-contrast sites, reducing eye strain.
- Accessibility benefits for users with visual impairments (e.g., achromatopsia, macular degeneration).
- Highly configurable with per-site options (blacklist, font-size adjustments) for fine-tuning across websites.
- Convenient UX features, including a toolbar toggle for quick on/off and reliable performance once configured.
Cons
- Occasional blocking of images or videos on certain sites (disrupts site functionality).
- Icon visibility issues on dark themes (the extension icon can be hard to see or invisible).
Recent reviews
by Fi*****, 2026-04-18
Font Contrast only applies Bold text on most sites only, nothing else.
None of the contrast, color, brightness, or opacity features work. Websites especially those who use closed shadow‑DOM components, CSS variables for all text colors, and !important rules that the extension can’t override.
The result is consistent: bold works, everything else does nothing. This extension has many limitations at the root level and in how the extension handles shadow‑DOM and variable‑based color systems. A fix would require support for rewriting CSS variables and penetrating closed shadow roots
Instructions are written by an NPC written for an AI or bot. Extension doesn't play nice if you have other extensions like uBlock or VPNs and more. It needs a major update.
You need to know how to tweak your settings. Otherwise, the default settings don't do much. It needs a toggle to see changes with and without as you change the settings.
It's funny how there are many Chromium extensions that do this job well, but only this one claims to adjust the contrast fonts. Clearly Mozilla's marketshare is dropping fast and developers want no part of it.
If F. Fusco, the developers spends a bit more time providing instructions and updating his guide which is not current it could be a "game changer". But it looks like it's abandoned.
by Wh*****, 2026-04-11
Works for me, but kills my usercontent settings for link colors, even if setting "ignore colorful text" is enabled.
by sd*****, 2026-03-12
Is Font Contrast Safe?
Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.
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.
- Critical ****** ****** ** ******* ***** ***** *** ** **** ** ***** **** ******** ****** *** ******** ********** * ******* ********
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.
Font Contrast has earned a fairly good reputation and likely can be trusted.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
Extension Guard
Discover every extension in use, analyze risks, and enforce blocking policies with Extension Guard
Secure Your Browser Upgrade to see full risk analysis details
Best Font Contrast Alternatives
Here are some Firefox add-ons that are similar to Font Contrast:
Font Contrast Improved
ssss wwww
Fix Contrast
Firstversionist
Text Contrast improved
ssss wwww
Website Font Display
LEO88
Font Customizer Basic
Tylekeo
FontFlex: Smart Font Changer
99OK
Font Adjuster
LyleSnake
Font Size Increase
Stefan vd
Text high-contrast & Fix light font
GarryW
Readable Web
machinepack
FontBoost
Laeag
Font Resizer
Lina Dinoa