OPC UA WebClient
Connect to any OPC UA server directly from your browser. Browse address spaces, monitor values in real-time, and write to nodes—all without installing software.
Free to use • No account required • Secure connection
How It Works
Why Use WebClient?
All the power of a native OPC UA client, accessible from any browser.
Instant Access
No download, no installation. Open your browser and connect.
Works Everywhere
Chrome, Firefox, Safari, Edge—any modern browser on any device.
Secure by Design
TLS encryption, security policies, and session management built in.
Real-time Updates
Live subscriptions with instant value change notifications.
Responsive UI
Full functionality on desktop, tablet, and mobile devices.
Authentication
Anonymous and username/password authentication supported.
Secure Connection Flow
End-to-end encrypted communication from your browser to the OPC UA server.
Full OPC UA Capabilities
Not just a viewer—a complete OPC UA client that supports browsing, reading, writing, subscriptions, and method calls.
Browse Address Space
Explore the complete node hierarchy with lazy loading for performance.
Monitor Values
Subscribe to variables and see real-time updates with sparkline history.
Write Values
Modify writable nodes with type-aware editors and confirmation.
Call Methods
Execute OPC UA methods with input arguments and view results.
Address Space Explorer
Enterprise-Grade Security
Choose the security level that matches your requirements. All communication is encrypted with TLS.
No security (testing only)
Message integrity verification
Full encryption (recommended)
Supported Security Policies
Ready to Connect?
No installation, no account, no cost. Just open your browser and start exploring OPC UA servers.