据 AlphaMoat 统计,截至 2026-09,Chrome 插件 PolySub 用户数为 61,环比 +41.9%,在全部 9,324 款 AI 浏览器插件中排名第 5,073 位,在「办公协作」分类(1,839 款)中排名第 1,048 位。
PolySub 是什么
Dual subtitles with Instant and managed AI translation, free themes, transcripts, and live transcription. PolySub adds bilingual subtitles and translation tools directly to web videos.
Open a web page with an HTML5 video, choose your language, and use PolySub to show the original captions together with a translated line. On pages without a supported video or captions, PolySub stays idle.
What PolySub includes:
- Dual original and translated subtitles over the video
- Instant translation and managed PolySub AI translation
- Subtitle size, position, display, and theme controls
- Transcript view, search, export, and language-learning tools
- Six free themes plus private transcript corrections
- User-initiated Live Transcribe for videos without usable captions
- Optional account sync for settings, vocabulary, and entitlements
Privacy and control:
- The extension does not send general product or feature-use analytics
- Live Transcribe captures only the current tab audio after you start it
- PolySub does not sell data or use it for advertising
- You can disable PolySub on individual sites
展开其余商店介绍▾
PolySub needs access to web pages because video players and caption tracks can appear on many different websites, including inside embedded frames. It uses that access only to detect the current video, read its captions, display the subtitle interface, and perform the subtitle or transcription action you request. It does not build or sell a browsing-history profile.
Basic instant translation works without payment. Some managed AI and Live Transcribe features require an account and available trial or Pro entitlement. Paid checkout is not open in this version.
Use only with content you are permitted to access. PolySub does not download video files or bypass subscriptions, access controls, or DRM.
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数据月份:2026-09 · 用户数与评分来自 Chrome 应用商店公开数据,按月聚合更新。口径说明见数据方法。