SubText handles two kinds of content: the subtitle text of the video you're watching, and any words or phrases you choose to look up. This text is sent to SubText and the service providers it uses to generate the translations. If you sign in, your saved words and phrases are stored in your SubText account, a session token is kept locally to keep you signed in, and your username is retrieved for display in the Account tab.

During signed-in extension use, SubText sends a payload-free account activity check no more than once every 7 days. It refreshes only the account's extension activity date for account lifecycle management and does not populate usage-statistics reports.

Usage statistics are disabled by default. If the user enables Share usage statistics in the System tab, the extension sends at most one activity signal per UTC day containing the browser family and extension version, plus aggregate counters for supported platform and AI feature/quality usage. Platform and AI-feature counters carry no account ID or per-install identifier and contain no subtitle, lookup, Word Hover, or chat text. Signed-in daily browser/version activity may be associated with the user's account; signed-out activity is aggregate only. The user can disable sharing at any time.

Depending on provider availability, capacity, and routing, translation and AI processing may occur in the United States, the European Union, or another disclosed processing location.

For full details, see https://subtext.site/privacy