SubFine by Subfine
SubFine — Any Video. Any Language. One Click. SubFine is the all-in-one subtitle companion for online video. Auto-detect subtitles, translate with AI, hear them in your language, and filter what you don't want — on any website.
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About this extension
SubFine — Any Video. Any Language. One Click.
SubFine is the all-in-one subtitle companion for online video. Auto-detect subtitles, translate with AI, hear them in your language, and filter what you don't want — on any website.
🌍 Universal Subtitle Detection
Automatically extracts subtitles from YouTube, Netflix, Crunchyroll, Vimeo, Bilibili, DailyMotion, and 1000+ websites. No searching, no copy-pasting — SubFine finds them instantly.
🤖 AI Translation into Any Language
Translate any subtitle into 20+ languages using Google Translate or Gemini AI. Choose your style — formal, conversational, dialect, anime-optimized, technical, or write your own custom prompt.
🗣️ Dialect Mode
Don't just translate — localize. Convert subtitles into natural spoken dialects (Egyptian Arabic and more) so it sounds like real conversation, not a textbook.
🎙️ Live Voice Dubbing
Hear any video in your language in real-time. Three dubbing engines: Google TTS (natural), Native (system voices), or ElevenLabs (cinematic). Perfectly synced with video timing and automatic volume ducking.
⬇️ Download Any Subtitle
Extract and export subtitles from any video — original or AI-translated — in SRT or VTT format.
🛡️ Smart Word Filter
Build custom word filter lists. Automatically replace, mute, or skip specific words or phrases while watching. Includes a built-in Islamic content filter — the only one of its kind in any browser extension.
🔍 Subtitle Search
Search any word inside the subtitles and jump instantly to that exact moment in the video.
🎨 Full Visual Control
Drag subtitles anywhere on screen, resize with your mouse, customize font, size, color, and background — live while watching.
🔒 100% Private — No Data Collection
SubFine runs entirely inside your browser. No tracking, no accounts, no servers storing your data.
The "all websites" permission is used only to detect subtitle files (.vtt/.srt) loaded by video pages — the same way browser DevTools works. Nothing leaves your device.
Mozilla Verified: Developer has declared zero data collection.
SubFine is the all-in-one subtitle companion for online video. Auto-detect subtitles, translate with AI, hear them in your language, and filter what you don't want — on any website.
🌍 Universal Subtitle Detection
Automatically extracts subtitles from YouTube, Netflix, Crunchyroll, Vimeo, Bilibili, DailyMotion, and 1000+ websites. No searching, no copy-pasting — SubFine finds them instantly.
🤖 AI Translation into Any Language
Translate any subtitle into 20+ languages using Google Translate or Gemini AI. Choose your style — formal, conversational, dialect, anime-optimized, technical, or write your own custom prompt.
🗣️ Dialect Mode
Don't just translate — localize. Convert subtitles into natural spoken dialects (Egyptian Arabic and more) so it sounds like real conversation, not a textbook.
🎙️ Live Voice Dubbing
Hear any video in your language in real-time. Three dubbing engines: Google TTS (natural), Native (system voices), or ElevenLabs (cinematic). Perfectly synced with video timing and automatic volume ducking.
⬇️ Download Any Subtitle
Extract and export subtitles from any video — original or AI-translated — in SRT or VTT format.
🛡️ Smart Word Filter
Build custom word filter lists. Automatically replace, mute, or skip specific words or phrases while watching. Includes a built-in Islamic content filter — the only one of its kind in any browser extension.
🔍 Subtitle Search
Search any word inside the subtitles and jump instantly to that exact moment in the video.
🎨 Full Visual Control
Drag subtitles anywhere on screen, resize with your mouse, customize font, size, color, and background — live while watching.
🔒 100% Private — No Data Collection
SubFine runs entirely inside your browser. No tracking, no accounts, no servers storing your data.
The "all websites" permission is used only to detect subtitle files (.vtt/.srt) loaded by video pages — the same way browser DevTools works. Nothing leaves your device.
Mozilla Verified: Developer has declared zero data collection.
Rated 4.9 by 9 reviewers
Permissions and data
Required permissions:
- Download files and read and modify the browser’s download history
- Access your data for all websites
Optional permissions:
- Access your data for sites in the youtube.com domain
- Access your data for sites in the crunchyroll.com domain
- Access your data for sites in the dailymotion.com domain
- Access your data for sites in the vimeo.com domain
- Access your data for sites in the bilibili.tv domain
- Access your data for sites in the bilibili.com domain
- Access your data for sites in the litix.io domain
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Add-on Links
- Version
- 1.0.3
- Size
- 459.07 KB
- Last updated
- 6 days ago (Mar 29, 2026)
- Related Categories
- License
- All Rights Reserved
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
- Add to collection