YouTube translator comparison
The best YouTube translator extension depends on how you watch
Want to hear the translation, not just read it? AutoDub combines AI dubbing with bilingual subtitles, so you can follow the explanation by ear and keep your eyes on the video. It’s free, with no account or API key to set up.
Written by the AutoDub team. Official feature and plan information checked on . This comparison uses published features and plans; sources are linked under each product. Video dubbing capabilities rechecked on .
Text translation or spoken dubbing?
A subtitle translator gives you translated text to read. A dubbing extension speaks the translation while the video plays. If you want to follow a tutorial or talk without constantly reading subtitles, video dubbing is the feature to look for.
| Extension | Spoken video dubbing | What you get | Free limits and costs |
|---|---|---|---|
| AutoDub | Yes — listen to the translation while watching | AI dubbing plus bilingual subtitles | Free; no account, API key or daily video limit |
| Immersive Translate | No — subtitle translation, not video dubbing | Text translation with bilingual subtitles | Free tier with daily request limits; paid plans for more capacity and engines |
| Trancy | Continuous video dubbing not listed; study TTS available | Subtitle translation, word lookup and study TTS | Free bilingual subtitles; paid plans add learning and AI features |
| LivDub | Yes — requires your own Gemini API key | Spoken translation from tab audio; Plus adds captions | 45 minutes/day on Chrome; Plus $5/month or $50/year, plus any Gemini usage charges |
Here, video dubbing means continuous translated speech during playback. Word pronunciation and study text-to-speech are different features. AutoDub gives you video dubbing and bilingual subtitles together, with voice selection and control over the original audio.
AutoDub: Free YouTube dubbing without an account or API key
Choose AutoDub when you want to follow a tutorial or talk in your language while staying in the YouTube player. Listen in one of 42 languages, choose a voice, and lower the original speech to focus on the translation. Bilingual subtitles and a clickable transcript let you read along or revisit an explanation.
Browsers. Desktop Chrome, Edge, Brave and Firefox.
Getting started. Install once, open a YouTube video and choose your language in the player. No account to create, API key to configure or daily video allowance to manage.
Immersive Translate: Bilingual subtitles plus webpage and document translation
Consider Immersive Translate if you also read foreign articles and PDFs. Its YouTube workflow translates subtitle text; it does not dub the video into your language. You read the translation while listening to the original audio. Choose AutoDub if you want to hear the translation as you watch.
Browsers. Official downloads include Chrome, Edge, Firefox and Safari.
Getting started. Enable bilingual subtitles through the extension. Choose the translation engine and plan that fit your video, webpage and document use.
Trancy: Studying a language with videos
Consider Trancy when understanding a video is also language practice. It offers subtitle reading, word lookup and saved vocabulary. Its official features include text-to-speech for pronunciation practice, but do not list continuous translated video dubbing. For listening to the translated explanation throughout a video, choose AutoDub.
Browsers. Desktop downloads include Chrome, Edge, Brave, Firefox and Safari.
Getting started. Start with bilingual subtitles, then choose a plan if you want additional AI transcription or advanced learning features.
LivDub: Live audio or videos beyond YouTube
Consider LivDub when you need to translate a live stream or a tab without captions. It captures audio and uses your own Google Gemini API key, which suits users comfortable configuring their own model access.
Browsers. Chrome extension; the vendor also offers separate mobile apps.
Getting started. Requires a Gemini API key and available model quota. Plus removes the daily cap and adds bilingual captions and MP3/VTT export. Listed subscription prices exclude tax; Google usage is billed separately when applicable.
Try the same passage before choosing
- Pick a video you actually want to watch and use the same target language in each extension. Run one extension at a time.
- Play a short passage with names or technical terms. Check whether the translation preserves the meaning and whether you can follow the picture comfortably.
- Pause and seek, then resume. For dubbing, listen for timing and overlapping voices; for subtitles, check readability.
- Check the allowance for your usual viewing time and whether any API charges are separate from the subscription.
Need a translated video file to edit or publish? Choose an export tool instead. This comparison focuses on watching videos in a browser.