Dark mode — derives palette from active color theme. Toggled in Settings → Appearance.
9 color themes — Hunter Green, Navy, Burgundy, Slate, Espresso, Plum, Charcoal, Classic, Midnight.
Mobile responsive — sidebar collapses to horizontal nav strip on small screens.
Keyboard shortcuts — / search, N add, Esc close, ← → paginate.
Statistics modal — total/starred/unread/tagged counts, monthly bar chart, top 10 tags and domains.
Offline indicator — amber badge in status bar when network is unavailable.
Copy URL button on each card with toast confirmation.
Click card to open URL — clicking anywhere on a card opens it in a new tab and marks it read.