# KoalaSync

> Private watch parties for Emby, Jellyfin, Plex, Netflix, Prime Video, Disney+, YouTube & more. No account needed. Real-time sync. Supports 13 languages. 100% free. No ADS or tracking.

Canonical page: [https://chrome-stats.com/d/koalasync](https://chrome-stats.com/d/koalasync)

## Overview

- **ID:** `koalasync`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** HungryKoala
- **Category:** photos-music-videos,tabs
- **Daily users:** 126
- **Weekly downloads:** 41
- **Rating:** 5.00 / 5 (2 ratings)
- **Version:** 3.2.0
- **Last updated:** 2026-09-03
- **First published:** 2026-05-18
- **Size:** 444 KB
- **Data as of:** 2026-09-13
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/koalasync/)
- **Website:** [https://sync.koalastuff.net](https://sync.koalastuff.net/)

## Description

**KoalaSync** lets friends enjoy private, synchronized watch parties across Emby, Jellyfin, Plex, Netflix, Prime Video, Disney+, YouTube, and other websites with standard HTML5 video players. Create a room, share an invite link, and synchronize play, pause, seeking, and episode readiness in real time—without accounts, ads, or tracking.

Built with privacy in mind, KoalaSync uses temporary relay data, supports optional Docker self-hosting, and never streams, uploads, or redistributes video content. Additional features include one-click invites, smart binge-watching controls, audio compression, a 13-language interface, and an open-source MIT-licensed architecture.

## Rankings

- #10,600 — Overall
- #20 — goal
- #26 — sync
- #66 — invite
- #196 — prime
- #240 — easy

## Permissions and access

### Permissions

- `storage`
- `tabs`
- `scripting`
- `alarms`
- `activeTab`
- `notifications`

### Host permissions

- `<all_urls>`

### Content script matches

- `sync.koalastuff.net`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension was recently updated in the past month. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/koalasync)