Dual Subs Privacy Policy
Dual Subs Privacy Policy
Effective date: November 14, 2026
Dual Subs ("the extension") is a Chrome extension that shows two subtitles at once on streaming video sites: the original subtitles and an automatic translation. This policy explains what data the extension handles. In short: Dual Subs has no accounts, no servers of its own, and no analytics, and it does not collect or sell your personal data.
To translate subtitles, the extension reads the subtitle text of the video you are watching and sends each line to the Google Translate service (translate.googleapis.com) together with the language codes you chose. Only the subtitle text and the languages are sent. The extension does not send the page address, the video title, your account details, cookies or any other information about you.
Google processes this text under its own terms and privacy policy: https://policies.google.com/privacy
The extension keeps recent translations in memory for the current browser session only, so the same line is not translated twice. This cache is not written to disk and is cleared when the browser closes the extension's background process.
Your choices (on/off, languages, mode, font size, color, background, and color theme) are saved with Chrome's extension storage. If you are signed in to Chrome with sync turned on, Chrome may sync these settings across your devices as part of its own sync service. The developer cannot see these settings.
The extension runs on supported streaming sites only. On those pages it reads subtitle files and the caption text shown by the video player, and draws the subtitle overlay on the video. This happens on your device. Apart from the subtitle text described in section 1, nothing from the page leaves your browser.
We do not collect names, email addresses, account information, browsing history, location, or payment information.
We do not use analytics, advertising, tracking pixels or fingerprinting.
We do not sell or share your data with third parties, other than sending subtitle text to Google Translate as described above.
We do not use subtitle text for advertising, profiling, or any purpose other than showing you the translation.
We do not load or run remotely hosted code.
storage: to save your settings.
Access to translate.googleapis.com: to request translations of subtitle text.
Access to supported streaming sites (for example Netflix, YouTube, Disney+, Prime Video, Max/HBO Max, Hulu, Crunchyroll, Paramount+, Peacock, MUBI, Plex and Apple TV+): to read the subtitles of the video you are watching and display the overlay.
The use of information received from Google APIs and the handling of user data by Dual Subs adheres to the Chrome Web Store User Data Policy, including the Limited Use requirements. Subtitle text is used only to provide the translation feature the user asked for.
Dual Subs does not knowingly collect personal information from anyone, including children.
If this policy changes, the updated version will be posted at this address with a new effective date. Material changes will also be noted in the extension's store listing.
Dual Subs is an independent project. It is not affiliated with or endorsed by Netflix, YouTube, Disney, Amazon, HBO Max, Warner Bros. Discovery, Google or any other streaming platform. All trademarks belong to their respective owners.
Questions about this policy: we@zappnia.com