Revolutionize transcription with unmatched accuracy, speed, and language support.
27M visits/mo+0.9%#4 Audio & Voice
$5/moStarting price
About LiveSub
LiveSub generates real-time subtitles for English and Japanese audio directly in the browser without requiring installation or sign-up. It captures audio from any browser tab playing sound—such as livestreams, meetings, or videos—and converts it into on-screen captions. The tool operates entirely client-side, meaning audio never leaves the user’s computer, and recognition models are downloaded once and reused. Users can toggle between English and Japanese translation, display original and translated text simultaneously, or show only one language. A floating window keeps subtitles visible while browsing, and transcripts can be downloaded or cleared from history. Optional word lists allow correction of frequently misheard terms, improving accuracy for names or specialized vocabulary. The free version shows subtitles after each sentence and uses the browser’s built-in translation, while a Pro subscription offers immediate subtitles and context-aware translation. Step-by-step guides cover common scenarios like adding Japanese subtitles to overseas streams or enabling English captions in Japanese meetings.
Key features
- Real-time speech-to-text for English and Japanese
- Toggle between original and translated captions
- Floating window for persistent subtitles
- Downloadable transcripts and clearable history
- Optional word lists for custom corrections
- Client-side audio processing with no external data sharing
- Balanced and CPU-only recognition modes
- Pro version for immediate subtitles and context-aware translation
Use cases
- Adding Japanese subtitles to overseas livestreams
- Providing English captions for Japanese online meetings
- Watching Japanese Twitch streams with English subtitles
Pros
- Supports real-time subtitles for English and Japanese
- Operates entirely in-browser without installation or sign-up
- Client-side processing ensures audio stays private
- Free with no time limits or per-minute costs
- Optional word lists improve recognition accuracy
Cons
- Limited to Chrome and Microsoft Edge on desktop
- Does not support Safari, Firefox, or mobile browsers
- Japanese-tuned mode unavailable when avoiding GPU usage
- Free version shows subtitles after each sentence, not live
Frequently asked questions about LiveSub
Does LiveSub cost anything to use?
LiveSub is free to use with no time limit. Speech recognition runs on the user's own computer, so there are no per-minute costs. A Pro subscription is available for additional features.
Do I need to install anything or create an account to use LiveSub?
No installation or sign-up is required. Users simply open the page in a supported browser to start using the tool.
Which browsers and devices are supported by LiveSub?
LiveSub works in Chrome or Microsoft Edge on a computer. Safari and Firefox are not supported, and mobile devices cannot share tab audio, so the tool does not function on phones or tablets.
Is my audio sent to LiveSub's servers when using the tool?
No. Speech recognition occurs entirely within the user's browser, and audio never leaves the computer. Only anonymous usage data is collected.
Can LiveSub work with audio from sources outside of YouTube?
Yes. LiveSub supports any browser tab playing sound, including livestreams, lectures, online meetings, or videos without captions.
How do I get started with LiveSub?
Open the LiveSub page in Chrome or Edge, press 'Start,' and select the tab playing the audio you want to subtitle. Follow the on-screen instructions to enable captions.
