Privacy Policy

Split View Router does not collect, store, or transmit any personal data over the network.

What the add-on stores locally

Using browser.storage.local (Firefox's local extension storage), the add-on saves:

• The mode setting ("simple" or "ctrl")
• The routing on/off state
• The active pair list — a mapping of left-tab IDs to right-tab IDs for the current browser session
• The paused-pair list — left-tab IDs whose routing is currently paused
• A diagnostic log buffer of up to 50 recent events (see below)

This data never leaves your computer. It is not synced to any account, not transmitted to any server, and not shared with any third party.

Diagnostic log buffer

To support troubleshooting, the add-on keeps an in-storage ring buffer of the last 50 events. Each entry contains:

• A timestamp
• An event source ("bg" for background, "cs" for content script)
• A severity (info, warn, err)
• A short event name (e.g., pair_added, routed, csp_blocked_window_open)
• A small data object — typically a tab ID, a pair-side ID, and a URL origin (e.g., https://docs.google.com). Full URLs, paths, query strings, and tokens are not logged.

The buffer is capped at 50 entries; older entries are evicted automatically. You can clear it manually from about:addons → Split View Router → Preferences → Clear log.

What is in the diagnostics blob you copy

The Copy diagnostics button in the Preferences page assembles a JSON blob containing:

• Extension name and version
• Your browser's userAgent and platform strings (e.g., Firefox version, OS family)
• Current state: mode, routing on/off, and the active pair list — including the titles of paired tabs so a reader can tell what was paired
• The contents of the diagnostic log buffer described above

This blob is placed on your clipboard. The add-on does not transmit it anywhere — it only goes wherever you paste it.

Heads up: the blob includes the titles of currently paired tabs. Page titles can sometimes contain document names, search queries, or other identifying text. Review the copied content before pasting it into a public bug report or chat.

Network activity

The add-on makes no network requests of its own. It does not contact any analytics, telemetry, or update endpoints beyond Firefox's standard add-on update mechanism.

Permissions

| Permission | Use |
|---|---|
| tabs | Read tab IDs/titles, navigate the right tab on a routed click, detect tab close events to clean up pairs |
| storage | Persist mode, routing state, pair list, paused list, and the diagnostic log buffer locally |
| sessions | Store a per-tab marker so pairings can be rebuilt automatically after a browser restart (survives session restore) |
| contextMenus | Add the right-click "Pair / Unpair / Pause" menu items to the tab strip |
| <all_urls> | Inject the click-interception content script on any page that the user pairs as a split tab |

The <all_urls> host permission is used solely to listen for link clicks in tabs the user has explicitly paired. The add-on does not read page content, form data, cookies, or any other browsing information.

Contact

For privacy questions or concerns, open an issue at:
https://github.com/neuralrift/split-view-router-firefox/issues