Dual Subtitles
Two synchronized tracks over the YouTube player — original + translation
Features
Language Selection
Primary and Secondary language from available video tracks
Overlay Customization
Font size, colors, background opacity, display mode
Subtitle Download
Popup button — export track as SRT or VTT
How to Install
- Click Install for Chrome or Firefox
- Confirm installation in the extension store
- Open any YouTube video → click the Dual Subtitles icon → choose languages
Also works in Edge and other Chromium-based browsers.
Screenshots
Extension vs DualSubs Website
| Task | Extension | dualsubs.online |
|---|---|---|
| Watch dual subtitles on YouTube | yes | no (local player needed) |
| Download YouTube subtitles | yes | yes |
| Merge two SRT files | no | yes |
| Translate SRT | no | yes |
FAQ
Which websites does it work on?
Only youtube.com (video watch pages).
Is it free?
Yes, completely free with no sign-up required.
Is my data collected?
No. Settings are stored locally in your browser. No data is sent to DualSubs servers.
How is it different from YouTube's built-in subtitles?
Two tracks at once with a customizable overlay, not one track at a time.
How do I download subtitles?
Open the extension popup → Download subtitles. SRT and VTT available.
More DualSubs Tools
Privacy & Permissions
Permissions: storage, scripting, downloads, access to *.youtube.com
No data is sent to DualSubs servers — settings are stored only in your browser.