People collaborating together in browser sessions

Collaborative Presence

Room-based presence for shared browsing—no session, no UI.

A collaborative browsing extension that lets people join a room, see each other's presence, and jump to the same page.

How it works

1. Create or join a room

Start a session with a room link or room ID.

2. Presence sync begins

Presence only syncs while you are actively in a room.

3. Leave room → UI disappears

Ending the session removes the UI and stops processing.

Data & privacy summary

ΔI8 does not sell data, does not track users across the web, and does not run hidden background analytics. The extension only syncs presence within rooms that users intentionally join.

Read the full privacy policy

Why the extension needs permissions

host_permissions (https://*/*, http://*/*)

The extension needs access to all websites because collaborative browsing must work on any page users visit. Content scripts are injected only when you're actively in a room, and the UI disappears when you leave.

activeTab

Allows the extension to access the current tab's URL and title when you interact with the extension popup, enabling jump and sync features during active sessions.

tabs

Needed to read tab information and send messages to content scripts, supporting presence sync and navigation features during active sessions.

scripting

Required to inject content scripts that display the collaborative UI on pages. Scripts are only injected when you're in an active room.

storage

Used to save user preferences, session state, and room identity so the experience stays consistent between browser sessions.

runtime

Enables message passing between the extension popup, content scripts, and background service worker for coordination.

windows

Allows the extension to detect window focus changes to sync presence state appropriately across browser windows.

https://xzycfbzuijzznirmmavv.supabase.co

Backend service permission for real-time presence synchronization. This is our Supabase instance used solely for room-based presence features.

The extension does not execute remote code and does not download scripts. All code is bundled in the extension package.

Security commitments

  • No eval or remote script execution.
  • No dynamic code loading.
  • Least-privilege use wherever possible.
  • UI appears only when active.

Support

Need help? Email support@deltai8.com.

FAQ

  • Why does it ask for broad website access? The extension must follow you to any site to enable collaborative browsing, but it only activates in a room.
  • How do I hide/disable the UI? Leave the room or disable the extension. The UI disappears immediately.
  • How do I leave a room? Use the in-extension leave/exit control or close the session.
  • What data is stored? Only minimal session data needed to keep the room in sync, retained temporarily.