DocsPrivacy and security
Sync
Keep bookmarks, history, tabs and more the same on your PCs, end-to-end encrypted, through a folder or a WebDAV server you choose.
Sync is off until you set it up. Luma has no account and no server of its own: you choose where the data goes, and it is encrypted on your PC before it leaves.
Where your data goes
- A folder: any folder that a service such as OneDrive, Dropbox or Nextcloud keeps in step across your PCs.
- WebDAV server: Nextcloud, ownCloud, Synology or any WebDAV server, over
https://only. Luma stores its password encrypted with Windows.
Each computer writes only its own file there, and reads the others’.
End-to-end encryption
Your sync passphrase never leaves your PC. Luma turns it into a key (with scrypt) and seals everything with AES-256-GCM before writing it. The folder or server only ever holds encrypted files.
Set it up
- Open Settings › Sync.
- Under Store encrypted data in, choose A folder and click Choose…, or choose WebDAV server and enter its address, your user name and password.
- Type a Sync passphrase of at least 10 characters, and type it again under Repeat passphrase.
- Check This computer’s name, and choose what to sync under What to sync.
- Click Turn on sync.
- On your other PC, do the same with the same folder or server and the same passphrase.
If the passphrase doesn’t match the one already used there, Luma tells you and doesn’t touch the existing data.
What is synced
| Item | Notes |
|---|---|
| Bookmarks | |
| History (last 90 days) | |
| Read later | Your reading list. |
| My filters | Your own blocking rules. |
| Appearance, layout and shortcuts | Not your privacy settings. |
| Open tabs | Shown under Your other devices. |
Passwords, addresses, payment cards, cookies and extensions are not synced.
Day to day
Luma syncs every ten minutes, and about half a minute after you change something. Sync now does it right away. Your other devices lists your other PCs, when they last synced and their open tabs.
Luma remembers the key with Windows’ secure storage. If that isn’t available, it asks for your passphrase when it starts (Enter your passphrase to resume sync, then Unlock).
Turn off sync stops syncing on this PC and makes it forget the key. The data already stored stays encrypted where it is. Sync isn’t available in private windows.