High Contrast

About

高对比度模式是一款轻量级网页可读性增强工具，帮助用户在浏览网页时快速调整页面颜色和
  对比度。无论是网页文字对比度不足、背景颜色刺眼、夜间阅读不舒适，还是部分用户存在低
  视力、眩光敏感或颜色辨识困难，都可以通过本扩展获得更清晰、更舒适的阅读体验。

  扩展支持多种显示方案，包括增加对比度、灰度、反转颜色、反转灰度和黑底黄字。用户可以
  选择仅对当前网站生效，也可以将常用方案设置为所有网站的默认方案。扩展还支持快捷键操
  作，方便快速开启、关闭或切换当前网站的高对比度效果。

  核心功能 / Key Features

  - 多种网页显示模式：增加对比度、灰度、反转颜色、反转灰度、黑底黄字
  - 支持仅当前网站生效
  - 支持应用到所有网站
  - 支持快捷键快速切换
  - 安装后提供简洁的新手引导页
  - 设置保存在本地，不上传用户数据

   适用人群

  - 觉得网页文字颜色太浅、对比度不足的用户
  - 长时间阅读网页容易视觉疲劳的用户
  - 夜间或低亮度环境下浏览网页的用户
  - 对强光、眩光或复杂背景敏感的用户
  - 部分低视力或颜色辨识困难用户

  本扩展不收集、不上传、不分析用户浏览内容。所有设置仅保存在浏览器本地。

  English:

  High Contrast is a lightweight readability enhancement extension for webpages. It
  helps users quickly adjust page colors and contrast when text is hard to read,
  backgrounds are too bright, or long reading sessions cause visual fatigue.

  The extension is designed for everyday readability and accessibility needs. It may
  be especially helpful for users with low vision, glare sensitivity, color
  perception difficulty, or anyone who prefers clearer contrast while browsing.

  High Contrast includes multiple viewing modes: increased contrast, grayscale,
  inverted color, inverted grayscale, and yellow on black. Users can apply a mode
  only to the current website or set a preferred mode as the default for all
  websites. Keyboard shortcuts are also supported for faster control.

  - Multiple viewing modes: increased contrast, grayscale, inverted color, inverted
    grayscale, and yellow on black

   Who It Helps

  - Users who find webpage text too light or low in contrast
  - Users who experience visual fatigue during long reading sessions
  - Users browsing at night or in low-light environments
  - Users sensitive to glare, bright backgrounds, or complex page designs
  - Some users with low vision or color perception difficulty

  - Apply settings only to the current website
  - Apply a default mode to all websites
  - Keyboard shortcuts for quick control
  - Simple onboarding page after installation
  - Preferences are stored locally and are not uploaded

  This extension does not collect, upload, or analyze browsing content. All
  preferences are stored locally in the browser.