Full privacy policy: https://www.onlinedigitalclock.com/privacy/

Summary for Firefox:
- Search words go to YouTube only when you press Search, and only after you allow it in Firefox's prompt. If you say no, nothing is sent.
- Video and playlist IDs go to YouTube to load titles, lists and the embedded player.
- Searches and title and playlist lookups carry no YouTube cookies and no sign-in. The YouTube library adds your device's offset from UTC to each of these requests. Playback uses YouTube's embedded player from www.youtube-nocookie.com.
- Thumbnails load from YouTube's image servers (i.ytimg.com).
- A radio stream link goes to that station's server when you play it.
- Settings and saved lists go to Firefox's own sync storage while sync is on. Sync is on by default. You can turn it off in settings.
- On install and on removal, the add-on opens a page on onlinedigitalclock.com. The address carries utm_source=firefox_extension and the add-on version. The website measures its pages with Google Analytics.
- The new tab's links to onlinedigitalclock.com carry utm_source=firefox_extension, utm_medium=newtab, utm_campaign=site_links and the link name. The website measures its pages with Google Analytics.
- The add-on has no analytics and no server of its own.