Lumen Companion by Lumen

Lumen Companion connects Firefox to the Lumen desktop time tracker so browser activity appears accurately in your personal timeline.

When a Firefox window is focused, the extension sends the active tab's URL and page title over a local-only WebSocket connection to the Lumen desktop app running on the same computer. It does not inject scripts into websites, read page bodies, contact advertising or analytics services, or send data directly to remote servers.

Lumen stores activity locally first. If the user signs in to Lumen, the desktop app may sync time entries to the Lumen service according to the Lumen Privacy Policy. Raw activity remains visible only to the user; workspace members see aggregate hours, not visited sites or window titles.

The Lumen desktop app is required. Private windows are excluded unless the user explicitly enables the extension there.