# Font Contrast

> Improves webpage readability.

Canonical page: [https://chrome-stats.com/d/font-contrast-fix](https://chrome-stats.com/d/font-contrast-fix)

## Overview

- **ID:** `font-contrast-fix`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Francesco Fusco
- **Category:** appearance,tabs
- **Daily users:** 795
- **Weekly downloads:** 21
- **Rating:** 4.38 / 5 (88 ratings)
- **Version:** 1.6.1
- **Last updated:** 2024-01-14
- **First published:** 2017-07-29
- **Size:** 198 KB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/font-contrast-fix/)

## Description

Font Contrast is a free and open-source Chrome extension designed to improve the readability of webpages. It combats the trend of hard-to-read text on websites by turning light or faint text to black or darker shades, enlarging small fonts, and increasing font boldness for better clarity. The extension is lightweight and efficient, ensuring smooth performance even on large websites.

Users can easily toggle the readability enhancements via the icon or a convenient keyboard shortcut (default: Shift+F1). Additionally, it provides an address bar button to quickly customize settings for specific websites. This program is released under the GNU General Public License v3.0, making it not only free to use but also open for contributions and modifications. For users who find Font Contrast helpful, there is an option to support its development via donations.

## Rankings

- #3,767 — Overall
- #361 — Tabs
- #5 — trash
- #10 — font
- #90 — license
- #92 — improve

## Permissions and access

### Permissions

- `http://*/*`
- `https://*/*`
- `storage`
- `tabs`
- `file:///*`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Review summary

Font Contrast is praised for greatly improving text readability on many sites and offering strong per-site customization, which helps users with visual impairments. It remains effective when properly configured and provides a handy toolbar toggle. However, reports of media blocking on some sites and a hard-to-see icon on dark themes indicate reliability/UI quirks. Overall, its value depends on careful setup and site compatibility, but it can be a powerful accessibility/readability tool when it works well.

### 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).

## Similar extensions and apps

- [Font Contrast Improved](https://chrome-stats.com/d/font-contrast-improved) — 1 users, 5.00 / 5
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- [Text Contrast improved](https://chrome-stats.com/d/text-contrast-improved) — 1 users
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- [Website Font Switcher](https://chrome-stats.com/d/website-font-switcher) — 1 users, 5.00 / 5
- [Font Size Increase](https://chrome-stats.com/d/font-size-increase-for-firefox) — 1,009 users, 4.25 / 5
- [Text high-contrast & Fix light font](https://chrome-stats.com/d/force-high-contrast-texts) — 24 users, 5.00 / 5
- [Readable Web](https://chrome-stats.com/d/readable-web) — 8 users
- [FontBoost](https://chrome-stats.com/d/fontboosts)

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Source: [Chrome-Stats](https://chrome-stats.com/d/font-contrast-fix)