Contrast Booster AA(4.5:1)

5.0(

1 rating

)

Item media 1 (screenshot) for Contrast Booster AA(4.5:1)

Overview

読みづらい文字色と背景色のコントラストをAA(4.5:1)以上になるように自動補正します。グローバルとサイト単位でON/OFF可。

説明（日本語）： Contrast Booster は、Webページ上の「読みにくい文字色」を自動で検出し、 WCAG AA（4.5:1）基準を満たすようにテキストカラーを最小限だけ補正する拡張機能です。・グローバルON/OFF … 全サイトで有効／無効を一括設定・サイトごとのON/OFF … 特定のドメインだけ無効にすることも可能・背景色は変更しない設計 … ブランドカラーやデザインを崩さず、文字色だけを調整背景デザインを保ったまま読みやすさを向上し、特に濃い背景×黒文字や薄い背景×白文字など、視認性が低い場面で効果を発揮します。英語版： Contrast Booster automatically adjusts text colors to meet the WCAG AA (4.5:1) contrast ratio without changing background colors. Global ON/OFF toggle Per-site enable/disable control Keeps brand colors intact while improving readability Perfect for making dark or light-themed pages easier to read.

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Details

Version
0.1.1
Updated
October 16, 2025
Flag concern
Size
2.75MiB
Languages
日本語
Developer
Email
nugeirba@gmail.com
Non-trader
This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

Not being sold to third parties, outside of the approved use cases
Not being used or transferred for purposes that are unrelated to the item's core functionality
Not being used or transferred to determine creditworthiness or for lending purposes

WCAG Color contrast checker

4.1

To check the color contrast between foreground and background of the texts

Adjust Page Brightness

4.0

Control your browser's global screen brightness to use sites that do not support the native dark theme

Farbkontrastprüfung - Color Contrast Checker

5.0

Überprüfen Sie das Farbkontrastverhältnis zwischen Vorder- und Hintergrund nach WCAG-Konformität. Mit Farbwähler und Pipette-Tool.

Fix Contrast

2.5

Fix color contrast issues on websites automatically.

BG Remover - Remove & Change Background

5.0

With the AI-powered tool, you can easily remove background from photo, or further replace the transparent backdrop with colors.

Color Accessibility Checker

5.0

Use a color accessibility checker to check color contrast ratio, fulfill wcag color standards, and improve website accessibility.

Content Edit & Blur

4.6

Easily edit, replace or blur elements on any webpage

AccessiWeb Color Contrast Tester

0.0

Verifica il rapporto di contrasto tra due colori.

Web Color Inverter Tool

1.9

Toggle Between Dark/Light Invertor Color

Text Blackness

3.4

Darken grey/colourful text on web pages. No more squinting at grey fonts for those of us with bad eyesight.

Bold It

4.6

Control the boldness of text on any website.

ADHD Reading

5.0

为注意力缺陷用户优化网页排版、字体和聚焦体验的阅读辅助工具。