Sign in from the extension
Log in to ZetaMarker from the desktop sidebar or Firefox Android Settings to enable cloud sync, the dashboard library, and cross-device highlights.
Sign in from the browser extension to sync highlights with your ZetaMarker account and dashboard.
When to sign in
Sign in when you want:
- Highlights to appear in the web dashboard
- Sync across multiple browsers or devices
- Export, labels, search, and cloud PDF storage
Local highlighting works without signing in. See Local highlighting vs cloud sync.
Desktop — sign in from the sidebar
- Open the ZetaMarker sidebar on any web page or PDF.
- Click Login in the user menu (or click the sync icon when it shows Sync: Not active).
- A sign-in window opens at
/app/login. - Enter email and password, or click Continue with Google.
- After success, the window closes and the extension stores your session.
The sidebar shows your name and Sync: Synced when connected.
Firefox Android — sign in from Settings
- Open Settings (ZetaMarker action in Firefox, or Settings from the logo menu on a page).
- Tap Sign in.
- Complete sign-in in the browser tab that opens.
- Return to Settings — your account status updates when sign-in succeeds.
See the Android welcome guide for the full mobile walkthrough.
What happens after login
- ZetaMarker fetches your account entitlements (trial, subscription, migration status).
- An initial sync runs — local highlights on open pages may upload to the cloud.
- The sync indicator (sidebar on desktop, Settings on Android) reflects the current state. See Cloud synchronization.
If cloud sync is blocked (trial expired, migration required), you will see an account message with next steps.
Sign out
Desktop: Use Logout in the sidebar user menu.
Android: Use Sign out in Settings.
Local highlights on the current device remain; cloud sync stops until you sign in again.
You can also choose Continue without cloud sync on some account messages to stay in local mode without logging out globally.
Troubleshooting
| Message | What to do |
|---|---|
| Sign-in cancelled | Try again; complete the login window |
| Another user uses this device. | Sign in with the same account, or use another browser profile. Learn why. |
| A sign-in window is already open. | Close the existing window and retry |
| Login failed | Check credentials at app.zetamarker.com/login |
Related
Create your account
Sign up with email or Google, verify your email, and start your 7-day Pro trial with no credit card required.
One account per browser profile
Why each browser profile (Chrome, Firefox desktop, or Firefox Android) links to one ZetaMarker account, and what to do if you see "Another user uses this device."