Browser Extension
The SyVault browser extension brings your vault directly into your browsing workflow. It supports Chrome, Firefox, Edge, Brave, and other Chromium-based browsers.
Architecture
The extension is built on Manifest V3 (MV3). Because MV3 service workers cannot access WebCrypto APIs needed for vault decryption, SyVault uses an offscreen document to run WASM-compiled cryptographic routines. This keeps all encryption and decryption off the main thread and entirely within the browser sandbox.
Popup UI
Click the extension icon to open the popup. From here you can:
- Search your vault with instant fuzzy matching.
- View record details including username, password, TOTP codes, and notes.
- Create new login records directly from the current page (URL and title are pre-filled).
- Launch the password generator.
- Access the Security Dashboard summary.
Autofill Injection
When you navigate to a page with login fields, the extension's content script detects input[type="password"] and related form elements. Matching credentials appear in a dropdown anchored to the input field. Selecting a match fills both the username and password fields.
If autofill does not trigger on a specific site, right-click the input field and choose SyVault > Autofill from the context menu.
Domain Matching
The extension matches records against the page's effective registered domain using the Public Suffix List. Subdomain tolerance is enabled by default -- a record for example.com matches app.example.com.
Quick Copy
Right-click any record in the popup to copy the username, password, or TOTP code individually without opening the full detail view.
Sync Behavior
The extension syncs with SyVault servers on three triggers: unlock, manual refresh, and a periodic background sync every 5 minutes. Changes made in the web app or desktop client appear in the extension after the next sync cycle.
Always install the extension from the official store listing. Sideloaded extensions bypass store review and may be tampered with.