Is Dualsub - YouTube Subtitle Translator safe?

Clean risk

Dualsub sends subtitle text and a persistent install ID to api.dualsub.xyz when AI Translation is enabled.

When a user turns on the extension's built-in 'AI Translation' feature, Dualsub collects the subtitle dialogue lines from the video being watched and posts them to its own translation service, api.dualsub.xyz, along with a UUID generated once at install and stored permanently in browser storage. If the user has supplied their own API key, that is sent along too. This only happens for the optional AI translation feature; it is not triggered by normal caption display or other extension functions.

Dualsub Studiov2.71.1Chrome Web Store
0Risk
Who publishes it

Dualsub Studio - 1 other listing from the same operator, none carrying a finding

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
Dualsub Studio

Same store account

1 other listing published from this account, 10k+ users between them, none of them carrying a finding.

Shared hosts - 3 hostnames

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

api.dualsub.xyz
Also called by 2 other listings, including Dualsub - YouTube Subtitle Translator
dualsub.xyz
Also called by 2 other listings, including Dualsub - YouTube Subtitle Translator
iflix.com
Also called by 2 other listings, including Dualsub - YouTube Subtitle Translator

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

Where it sends data

Destinations our analysis observed Dualsub - YouTube Subtitle Translator contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

  • api.dualsub.xyz

    Dualsub - YouTube Subtitle Translator sends data to api.dualsub.xyz. One other extension we have analysed sends data here.

Updated 30 September 2026gnlibmlfpencglodjpgnalbdebfhpmfp