YT Watch Marker

Marks watched videos on YouTube with visual indicators and lets you manage your watch history.

============================================================ YT Watch Marker ============================================================ YT Watch Marker is a free Chrome browser extension that helps you keep track of which YouTube videos you have already watched. It adds visual progress indicators directly to your YouTube library, provides a full-featured dashboard to manage your watch history, and optionally syncs your data across devices via Google Drive. FEATURES: • Watch Tracking — Automatically marks videos as watched with colored borders, glow effects, and progress bars directly on YouTube thumbnails. Colors smoothly transition from unseen to seen based on your watch progress. • One-Click Toggle — Mark any video as watched or unwatched with a single click, both on the video page and directly on thumbnails via a hover button. • Google Drive Sync — Your watch data automatically syncs across all your Chrome browsers using Chrome's built-in sync. For larger libraries, optionally enable Google Drive sync with one click for unlimited storage. Your data stays safe and accessible across devices. • Full Dashboard — Browse, search, and manage your entire watch history in a dedicated dashboard with grid and list views. Filter by channel, sort by various criteria, and view video titles, channels, watch times, and status at a glance. • Dark & Light Theme — Supports dark and light modes with an auto option that follows your system setting. Customize colors for seen and unseen video indicators to match your preference. • Multi-Language — Available in English and German. Seamlessly adapts to your browser language preferences. • Privacy First — Your data stays local by default. Cloud sync is optional and uses only your personal Google Drive app folder. No external servers, no tracking, no ads. • Import & Export — Back up or transfer your watch history as JSON files through the dashboard. …and much more. ============================================================ PERMISSION JUSTIFICATIONS: storage: Stores the user's video watch history, extension settings, and metadata cache locally and synced across the user's Chrome browsers. identity: Powers the optional Google Drive sync feature. Users can enable this to store unlimited watch history in their personal Google Drive. Requires explicit user consent via OAuth2 authorization prompt. Host permission (youtube.com): Reads YouTube page content to identify video thumbnails and overlay visual watch markers. Monitors video playback progress to automatically track watch state.