{"id":49490652,"url":"https://github.com/shik3i/koalasync","last_synced_at":"2026-06-07T00:01:50.690Z","repository":{"id":352808133,"uuid":"1216603421","full_name":"Shik3i/KoalaSync","owner":"Shik3i","description":"Minimalist, privacy-first synchronized video playback for YouTube, Netflix, Emby, and general HTML5. 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align=\"center\"\u003e\n  \u003cimg src=\"website/assets/PlatformJuggler_New.webp\" width=\"280\" alt=\"KoalaSync Mascot\"\u003e\n\u003c/p\u003e\n\n\u003ch1 align=\"center\"\u003eKoalaSync\u003c/h1\u003e\n\n\u003cp align=\"center\"\u003e\n  \u003ca href=\"https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml\"\u003e\u003cimg src=\"https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml/badge.svg\" alt=\"Release Status\"\u003e\u003c/a\u003e\n  \u003ca href=\"https://github.com/Shik3i/KoalaSync/releases\"\u003e\u003cimg src=\"https://img.shields.io/github/v/release/Shik3i/KoalaSync\" alt=\"GitHub release\"\u003e\u003c/a\u003e\n  \u003ca href=\"LICENSE\"\u003e\u003cimg src=\"https://img.shields.io/github/license/Shik3i/KoalaSync?color=blue\" alt=\"License\"\u003e\u003c/a\u003e\n  \u003ca href=\"https://addons.mozilla.org/de/firefox/addon/koalasync/\"\u003e\u003cimg src=\"https://img.shields.io/badge/Firefox-Download-orange?logo=firefoxbrowser\u0026logoColor=white\" alt=\"Firefox Add-on\"\u003e\u003c/a\u003e\n  \u003ca href=\"https://chromewebstore.google.com/detail/koalasync/obbnmkmlaaddodakcbdljknjpagklifc\"\u003e\u003cimg src=\"https://img.shields.io/badge/Chrome-Download-blue?logo=googlechrome\u0026logoColor=white\" alt=\"Chrome Extension\"\u003e\u003c/a\u003e\n\u003c/p\u003e\n\n\u003cp align=\"center\"\u003e\u003ca href=\"CHANGELOG.md\"\u003e\u003cb\u003eNew v2.0.1 Release!\u003c/b\u003e — See what's changed\u003c/a\u003e\u003c/p\u003e\n\n\u003cp align=\"center\"\u003e\u003ci\u003eKoalaSync is a lightweight Browser Extension and Relay Server for synchronized video playback on almost any website with a video element—YouTube, Twitch, Netflix, Emby, Jellyfin, and beyond. Built with a focus on \u003cb\u003eData Sovereignty\u003c/b\u003e and \u003cb\u003ePerformance\u003c/b\u003e.\u003c/i\u003e\u003c/p\u003e\n\n### 🌟 Why KoalaSync?\n\n*   **🛡️ Security-First**: Volatile RAM-based relay with built-in brute-force protection and zero-persistence architecture.\n*   **📡 Direct Logic**: Manual Socket.IO wire implementation for reliable synchronization.\n*   **🛠️ Clean Build**: Dependency-free extension runtime with no library overhead.\n*   **🌐 Universal**: Works on any website with a `\u003cvideo\u003e` tag.\n\n---\n\n### ✨ Key Features\n\n- **Global Synchronization**: Synchronize Play, Pause, and Seeking on any website with a `\u003cvideo\u003e` tag.\n- **Episode Auto-Sync**: Perfectly sync series binges. All peers wait until everyone has loaded the next episode before starting together.\n- **Smart Matching**: Automatically highlights tabs containing matching video titles.\n- **Dual Heartbeat Architecture**: Robust session tracking that prevents ghost rooms and stale connections.\n- **Efficient Relay**: Minimal overhead WebSocket message forwarding.\n- **Seamless Invitations**: Smart links that automatically configure server and room credentials for your friends.\n\n---\n\n### 🚀 Quick Start\n\n#### For Users (Installation \u0026 Usage)\nThe easiest and safest way to install KoalaSync is directly through the official browser stores:\n\n\u003cp\u003e\n  \u003ca href=\"https://chromewebstore.google.com/detail/koalasync/obbnmkmlaaddodakcbdljknjpagklifc\"\u003e\u003cimg src=\"https://img.shields.io/badge/Chrome-Download-blue?logo=googlechrome\u0026logoColor=white\u0026style=for-the-badge\" alt=\"Chrome Extension\"\u003e\u003c/a\u003e\n  \u003ca href=\"https://addons.mozilla.org/de/firefox/addon/koalasync/\"\u003e\u003cimg src=\"https://img.shields.io/badge/Firefox-Download-orange?logo=firefoxbrowser\u0026logoColor=white\u0026style=for-the-badge\" alt=\"Firefox Add-on\"\u003e\u003c/a\u003e\n\u003c/p\u003e\n\n*(For manual offline installation: Download the latest `.zip` from the [Releases](https://github.com/Shik3i/KoalaSync/releases) page and load it as an \"Unpacked Extension\" in Developer Mode).*\n\n**How to use:**\n1. **Create a Room:** Click the Koala icon in your browser and hit `+ Create New Room`.\n2. **Invite Friends:** Share the auto-copied invite link. Once they click it, they automatically join.\n3. **Pick a Video:** Navigate to the Sync Tab, select the tab playing your video, and grab some popcorn! 🍿\n\n---\n\n### 🛠️ For Developers \u0026 Self-Hosters\n\n#### 📂 Repository Structure\n\n- `extension/`: Browser Extension (Chrome \u0026 Firefox).\n- `server/`: Node.js + Socket.IO Relay Server (Containerized).\n- `website/`: Marketing landing page \u0026 Invitation Bridge.\n- `shared/`: **Single Source of Truth** for protocol constants.\n- `scripts/`: Automated build and synchronization utilities.\n- `docs/`: Technical deep-dives ([Architecture](docs/ARCHITECTURE.md), [Sync Guide](docs/SYNC_GUIDE.md)).\n\n#### Building from Source\nTo build the extension from source and synchronize protocol constants:\n```bash\nnpm install\nnode scripts/build-extension.js\n```\nThe compiled artifacts will be available in the `dist/` directory.\n\n#### For Self-Hosting (Docker)\nDeploy your own private relay server using our official image:\n```bash\n# Pull the latest image\ndocker pull ghcr.io/shik3i/koalasync:latest\n\n# Or use our example compose file\ncp docker-compose.caddy.example.yml docker-compose.yml\ndocker-compose up -d\n```\nThe server will be available at `ws://localhost:3000`. See [Docker network compose](docker-compose.caddy.example.yml) or [Static IP compose](docker-compose.ip.example.yml) for ready-to-use Docker Compose files.\n\nTo connect your extension to a self-hosted server, open the popup → **Room** tab → select **Custom Server** → enter your server's WebSocket URL (e.g., `ws://localhost:3000`).\n\n\u003e **⚠️ Note**: `ws://` only works for `localhost`. If you deploy to a real domain, you **must** use `wss://` (e.g., `wss://sync.yourdomain.com`). This requires a TLS-terminating reverse proxy (e.g., Caddy, Nginx, or Traefik) in front of the relay server. See [Caddyfile.example](Caddyfile.example) for a production-ready template.\n\nTo verify your relay is reachable from outside, visit `https://your-domain.com` in a browser — it should return `{\"status\":\"online\",\"service\":\"KoalaSync Relay\"}`.\n\n---\n\n### 🌐 Localization \u0026 Translations\n\nBoth the official KoalaSync website and the **v2.0 Browser Extension** feature full dynamic localization:\n- **Available Languages**: Support is included for 6 languages: English (`en`), German (`de`), French (`fr`), Spanish (`es`), Portuguese (Brazil) (`pt-BR`), and Russian (`ru`).\n- **Real-Time Extension Localization**: Inside the extension Settings panel, users can swap languages instantly. The entire interface, notifications, Empty States, and onboarding guides re-translate dynamically in real-time.\n- **Contributing**: We welcome community translations for both the website and the extension! Please refer directly to the [TRANSLATION.md](website/TRANSLATION.md) guide for step-by-step instructions on how to audit, refine, or add new languages.\n\n\n---\n\n### 📖 Documentation \u0026 Links\n\n- **[CHANGELOG.md](CHANGELOG.md)**: Full version history for the extension and relay server.\n- **[TESTED_SERVICES.md](TESTED_SERVICES.md)**: Detailed compatibility matrix of tested streaming platforms and known limitations.\n- **[TRANSLATION.md](website/TRANSLATION.md)**: Translation and localization guide for contributors.\n- **[PRIVACY.md](PRIVACY.md)**: Data Handling and Privacy Policy.\n- **[CONTRIBUTING.md](CONTRIBUTING.md)**: How to help make KoalaSync better.\n- **[HOW_IT_WORKS.md](docs/HOW_IT_WORKS.md)**: Step-by-step walkthrough of the complete user flow.\n- **[ARCHITECTURE.md](docs/ARCHITECTURE.md)**: Deep-dive into the two-phase sync and heartbeat logic.\n- **[SECURITY.md](SECURITY.md)**: Disclosure policy and security practices.\n- **[Caddyfile.example](Caddyfile.example)**: Production Caddy configuration for website and relay.\n\n---\n\n\u003cdiv align=\"center\"\u003e\n  \u003csub\u003eBuilt with ❤️ by \u003ca href=\"https://github.com/Shik3i\"\u003eShik3i\u003c/a\u003e. KoalaSync is Open Source under the \u003ca href=\"LICENSE\"\u003eMIT License\u003c/a\u003e.\u003c/sub\u003e\n\u003c/div\u003e\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fshik3i%2Fkoalasync","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fshik3i%2Fkoalasync","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fshik3i%2Fkoalasync/lists"}