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Quick start
Go from installation to target-language selection and your first translation in a few short steps
Subify documentation
Subify Documentation: Installation, Subtitle Translation & Video Dubbing
Find practical guides for installing Subify, translating subtitles, using live captions, AI video dubbing, configuring Providers, and exporting SRT, VTT and TXT files
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Subtitle translation
Learn how to translate available subtitles and choose source and target languages
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Live captions
When subtitles are missing, Live Captions can turn spoken video into text on screen
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Video dubbing
Understand the dubbing flow from speech input to translation and target voice
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Providers and API
A Provider handles part of translation or voice processing and can be configured in settings
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SRT, VTT and TXT export
Use subtitle exports when you want to edit or reuse the file outside Subify
See the real extension
Real Subify extension screenshots
These screenshots come from the real extension so you can see the interface and settings before installing
FAQ
Start here when you get stuck
Common questions about installation, translation, dubbing, Providers and exports
Install the extension for Chrome or Firefox from the download page. Then choose a Provider and enter your own API key. The quick-start guide shows each step.
Subify translates existing subtitles. If a video has none, Live Captions can turn its speech into on-screen text as it plays, in supported workflows.
First set your Provider and target language, then turn on dubbing in the extension settings. Tab audio is sent only to the Provider you chose.
SRT and VTT are both timed subtitle files. SRT is simple and widely supported. VTT is designed for web players and can set caption position and style. TXT contains only the text, without timings.
If you want a service that isn't built in, you can add an OpenAI-compatible API with your own address and model. The browser asks permission for that one domain only, and your key is sent only to that address.
The result depends on the Provider and model you chose, the quality of the original subtitles and the speech in the video. Each video's translation is saved in your browser, so watching it again doesn't cost another API call. AI output can still contain mistakes.
SUBIFY
Start with your first video
Install the extension, open a video and choose translation or dubbing. You can also explore Subify features and how it works for more details.