# Cast

> Cast a media URL or mirror the browser window/screen to a Chromecast, with a native openscreen backend and no third-party tools.

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

## Overview

- **ID:** `castbridge-cast`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Gianluca Mazza
- **Category:** other
- **Daily users:** 614
- **Weekly downloads:** 158
- **Rating:** 1.00 / 5 (1 ratings)
- **Version:** 0.3.1
- **Last updated:** 2026-06-13
- **First published:** 2026-06-10
- **Size:** 40 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/castbridge-cast/)
- **Website:** [https://github.com/gianlucamazza/cast/issues](https://github.com/gianlucamazza/cast/issues)

## Description

Casts media URLs, YouTube videos, and live window/screen mirrors (H.264, low latency) from LibreWolf/Firefox to a Chromecast on your LAN.

IMPORTANT: this extension requires the open-source castbridge native daemon (BSD-3-Clause) installed on the same machine; without it the extension shows an actionable 'native host missing' error and does nothing else. Source code and install instructions: <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/eac46d7c8ad6510a1fe418435f6faf704fe5bafb598d0c4cab448c43aa8de5f9/https%3A//github.com/gianlucamazza/cast" rel="nofollow">https://github.com/gianlucamazza/cast</a>

The content script runs on all http(s) pages because detecting castable media on arbitrary sites is the core feature; it is read-only detection and sends nothing off the device. All communication stays on the local machine (native messaging) and your LAN (Cast protocol). No analytics, no remote servers.

## Rankings

- #4,398 — Overall
- #134 — instruction
- #223 — error
- #227 — analytics

## Permissions and access

### Permissions

- `nativeMessaging`
- `activeTab`
- `tabs`
- `storage`
- `contextMenus`
- `notifications`
- `alarms`

### Content script matches

- `*`
- `www.youtube.com`
- `www.youtube-nocookie.com`

## Safety

- **Risk impact:** Very 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 has low user count. Unpopular extensions 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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- [PlayBridge Video Detector](https://chrome-stats.com/d/playbridge-video-detector) — 5 users

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