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.

🌍 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.