Chronicle Companion Browser Extension for Google Chrome, Microsoft Edge, and Mozilla Firefox.
Chronicle Companion does not operate, connect to, or maintain any cloud servers, databases, or analytics services. All browsing telemetry is communicated exclusively to your own device via local loopback HTTP (http://127.0.0.1:4242) to the Chronicle desktop application. Your browsing history never leaves your personal computer.
This Privacy Policy applies to the Chronicle Companion browser extension across Chromium-based browsers (Chrome, Edge, Brave, Opera, Arc) and Mozilla Firefox.
The extension serves a single, dedicated purpose: to communicate active website domain hostnames and sanitized URLs locally to the Chronicle desktop time-tracking application installed on your personal computer.
When actively browsing in a normal browser window, the extension detects:
https://github.com/profile or https://www.youtube.com/watch?v=...) so Chronicle can categorize your web activity in your local timeline.utm_*, fbclid, gclid, msclkid) are automatically stripped before logging.Chronicle Companion is engineered with strict isolation:
The extension requests only the minimum permissions necessary to function:
| Permission | Why It Is Needed |
|---|---|
tabs |
Detects the URL and title of the active tab in the currently focused window. |
storage |
Stores local connection state and error diagnostics in local browser storage (chrome.storage.local). |
alarms |
Schedules a low-frequency 1-minute keepalive alarm to wake the extension and keep passive media (e.g., YouTube, podcasts) fresh in Chronicle without draining battery. |
http://127.0.0.1:4242/* |
Allows sending local HTTP loopback packets directly to the Chronicle desktop companion server on your own PC. |
Private browsing settings are strictly respected:
We do not sell, rent, monetize, or disclose your data to any third parties:
Because all data is stored locally in your SQLite database on your device:
If you have questions, feedback, or support inquiries regarding this Privacy Policy or Chronicle Companion, please reach out directly: