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三分熟遮罩：一个简单实用的网页视频字幕遮罩工具，支持拖拽、缩放和透明度调节。 三分熟遮罩是一款专为外语学习者打造的轻量级工具。它通过在网页视频（如 Bilibili, YouTube, Netflix）上添加可交互的“毛玻璃”遮罩，帮助你遮蔽中文字幕，强迫自己练习听力。 核心功能： 全平台支持：适配所有主流视频网站，自动追踪全屏模式。 自由交互：支持遮罩的自由拖拽、缩放（右下角手柄）以及透明度和模糊度的实时调节。 智能透视：鼠标悬停在遮罩上时，遮罩会自动淡化，方便快速校验听力内容。 纯净安全：不收集任何用户数据，仅在本地保存你的显示偏好设置。
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.