qtwebchannel ☆

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Description:
Bridges the gap between Qt applications and HTML/JavaScript

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | @qtproject | formulae.brew.sh

Category: Developer tools

Tags: qt websockets hybrid-apps javascript cpp

Install: brew install qtwebchannel

About:
Qt WebChannel enables real-time, bidirectional communication between Qt/C++ applications and HTML/JavaScript frontends. It allows web content to seamlessly access and manipulate C++ objects and signals, effectively turning a web view into a dynamic interface for native logic. This facilitates the development of hybrid applications using standard web technologies for the UI while leveraging Qt's robust backend capabilities.

Key Features:

Seamless integration of QML/C++ objects with web content
Real-time, bidirectional data synchronization
Supports WebSockets and local transport mechanisms
Minimal boilerplate for exposing C++ APIs to JavaScript

Use Cases:

Building hybrid desktop applications with web-based UIs
Creating remote control interfaces for embedded Qt systems
Developing dashboards that visualize data from a C++ backend

Alternatives:

WebSocket API – Manual WebSocket implementation requires more code for serialization and object mapping compared to Qt WebChannel's automatic object exposure.
Electron – Electron bundles a full Chromium browser, resulting in larger binaries, whereas Qt WebChannel uses the system's native web rendering engine.

Version History

Detected	Version	Rev	Change	Commit
Oct 9, 2025 10:54pm		0	VERSION_BUMP	758d0327