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SubTrans - General Subtitle Translator Suite

General Subtitle Translator for Multiple Sites. Displays bilingual subtitles. Supported sites are actively increasing.

Users30KCurrent public install base

Rating4.0Store average score

Reviews120Public review volume

Manifest versionV3Extension platform version

7-day growth0Net users gained this week

7-day growth rate0%Relative weekly velocity

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Start

3.94

Latest

3.95

7-day rating change

+0.01

2026年7月14日2026年7月20日

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Version4.17.0

ManifestV3

Size737KiB

Languages10English / Tiếng Việt / español +7

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Overview

Product summary

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🎯 SubTrans is a general subtitle translator Suite. It extends the original Subtitle into bilingual subtitles. The goal of SubTrans is to support as many widely used video sites as possible.

🌍 SubTrans can translate video's official subtitles / captions into almost all widely used languages. To make it work, the video should have AT LEAST one official subtitle / caption.

🛠 Subtitle styles are settable. You can set styles for bilingual subtitles separately, including font size, font color, font weight, opacity, background color, etc.

📂 External subtitles are supported. You can use local disc subtitle file or input subtitle raw content manually, then choose to display it directly or use it as a translation source.

⏰ In case subtitles' timestamps don't fit well with the video, you can choose to advance or delay the timestamps of each subtitle separately.

🚠 The subtitles are filled in a draggable box. Hence you can adjust the subtitles' position as you wish.

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Store average score4.0Chrome Web Store aggregate rating, including ratings without synced review text

Synced text average3.9Average computed only from synced review bodies

Reviews with text86Synced review bodies

Total ratings / reviews120Chrome Web Store public rating/review count

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AI product read

General-purpose bilingual subtitle translator that works across multiple video streaming and education sites

Non-native speakers struggle to understand video content in foreign languages. SubTrans overlays translated subtitles alongside the original, enabling bilingual learning and comprehension on sites that don't natively offer the user's preferred language.

1. User installs extension and visits a supported video site. 2. Extension detects official subtitles on the page. 3. User opens popup, selects translation source and target language. 4. Extension calls SubTrans backend API to translate subtitles. 5. Bilingual subtitles are overlaid on the video in a draggable box. 6. User can customize styles, adjust timestamps, upload external subtitles, or search OpenSubtitles. Free tier has a translation quota; PRO subscription unlocks higher quota and subtitle download.

Target users: Language learners watching foreign-language video content / Non-native speakers on streaming platforms / Students on online education platforms (Coursera-style sites) / Users who need bilingual subtitles for study or reference

Source files are heavily minified/bundled (content.js 868KB, popup.js 486KB), making it difficult to trace exact login and payment implementation flows
The 'fake' prefix in message key names (subt_fake_need_login, subt_fake_exceed_quota, subt_fake_download_need_pro) is ambiguous — could indicate dark-pattern UI or simply that these are displayed as subtitle overlays
Cannot confirm exact payment processor (Stripe etc.) without accessing the subtrans.cc pricing page

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Permission risk

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扩展能力较强：storage、webRequest
同时具备浏览数据与站点访问能力

Publisher

SubTrans team

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