Everything you need.
Nothing you don't.
SyncDub is built around one principle: dubbing should feel native, not bolted on. Every feature exists to make the video disappear and the content take over.
Translation that keeps up with the speaker.
The problem
Other tools feel like subtitles on a 5-second delay. By the time you read them, the moment is gone.
Our approach
SyncDub streams translation in under 400 milliseconds — close enough to feel like the speaker switched languages.
→ en
100ms
→ es
220ms
→ fr
324ms
→ de
412ms
Not the robotic monotone you expect.
The problem
Most AI voices still sound like GPS navigation. They get the words right but lose everything else.
Our approach
One consistent natural voice across all 70+ languages — trained to breathe, pause and emphasise like a real speaker.
Your voice
Same voice everywhere
SyncDub Voice
natural · mid · consistent
One carefully tuned voice that sounds the same whether the original was English, Japanese, Arabic or Portuguese.
Your audio stays yours.
The problem
Other services upload everything you watch to their servers, indefinitely.
Our approach
Audio is processed in your browser over a secure WebRTC channel and never stored. Close the tab and it's gone.
End-to-end
WebRTC · no audio stored
Two modes, one toggle.
The problem
Sometimes you want to read. Sometimes you want to listen. Switching apps breaks your flow.
Our approach
Toggle between dubbed audio and live translated subtitles without leaving the page.
Mode
“In a world where every screen speaks a different language, one signal bridges them all.”
Not locked to one platform.
The problem
Most dubbing tools only work on YouTube. The rest of the web is still off-limits.
Our approach
SyncDub detects any HTML5 video element — YouTube, Netflix, Udemy, Twitch, custom players. If there's a video, we can dub it.
Works on
+ any HTML5 video element
Speed. Voice. Language. Hotkeys.
The problem
Default settings never fit everyone. Power users waste time fighting the tool.
Our approach
Set per-site preferences, custom hotkeys, default language pairs, and translation memory. Your settings follow you across devices.
Keyboard shortcuts
Frequently asked.
Stop reading subtitles.
Start watching in your language.
Install SyncDub in under 30 seconds. Translate your first video and never hear the wrong language again.
Works on every Chromium browser · cancel anytime