SubBridge by Kerim Demirkaynak
Translate the subtitles web videos already have (Google, Gemini, OpenRouter, NVIDIA) and play .ass/.srt subtitles on any video.
Available on Firefox for Android™Available on Firefox for Android™
29 Users29 Users
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About this extension
SubBridge translates subtitles displayed on video websites into your preferred language. Whether you're watching anime, movies, or other content on YouTube and supported streaming websites, SubBridge helps you understand what you're watching without leaving the page.
Features
How it works
SubBridge works with subtitles already displayed by supported video websites. Enable subtitles on a video, activate SubBridge, and let it translate them into your chosen language.
No subtitle files to upload. No need to download videos. Just translated subtitles while you watch.
Translation services
SubBridge supports Google Translate, DeepL, and various AI translation providers. Some services require an API key and may incur usage costs. Available features depend on the selected provider.
Features
- Instant subtitle translation: Translate existing video subtitles as you watch.
- Multiple translation engines: Use Google Translate or DeepL, or choose AI-powered translation through services such as OpenAI, Google Gemini, Anthropic Claude, DeepSeek, OpenRouter, and others.
- AI translation: Optionally use AI models for more context-aware and natural translations.
- Custom API support: Configure compatible API endpoints and use your preferred translation service.
- 40 languages: Choose your preferred source and target languages.
- Customizable appearance: Adjust the appearance of translated subtitles to suit your preferences.
- Translation glossary: Configure preferred translations for names and terminology when using compatible AI providers.
- Context-aware translation: Give supported AI models additional subtitle context to improve translation consistency.
- Flexible settings: Customize translation behavior and other preferences.
How it works
SubBridge works with subtitles already displayed by supported video websites. Enable subtitles on a video, activate SubBridge, and let it translate them into your chosen language.
No subtitle files to upload. No need to download videos. Just translated subtitles while you watch.
Translation services
SubBridge supports Google Translate, DeepL, and various AI translation providers. Some services require an API key and may incur usage costs. Available features depend on the selected provider.
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Permissions and data
Required permissions:
- Access your data for all websites
Optional permissions:
- Access your data for all websites
Required data collection, according to the developer:
- Website content
More information
- Add-on Links
- Version
- 3.0.1
- Size
- 120.34 KB
- Last updated
- a month ago (Oct 14, 2026)
- Related Categories
- License
- MIT License
- Version History
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