HTTP/3 Check - QUIC Browser Test
Test your website and browser for HTTP/3 and QUIC protocol support online - Free browser check tool
Free HTTP/3 Browser Check & QUIC Test Tool
Our HTTP/3 browser check tool tests if your website and browser support the latest HTTP3 and QUIC protocols. This online QUIC test helps you verify both server and browser compatibility, which can improve loading times by up to 30% and provide better performance on unreliable networks. This HTTP3 test tool helps you verify your server configuration and ensure you're offering the best possible performance to your visitors.
Browser HTTP/3 Support Test
Modern browsers like Chrome, Firefox, and Edge support HTTP/3 and QUIC protocols. Use our browser check tool to verify if your current browser can establish HTTP/3 connections. This browser test ensures compatibility with QUIC-enabled servers.
Simply enter your domain name above without "http://" or "https://" prefixes to run the HTTP3 check.
Why Test for HTTP3 Support?
HTTP3 is the latest version of the HTTP protocol that powers the web. Unlike previous versions that use TCP, HTTP3 is built on QUIC (Quick UDP Internet Connections) which offers several advantages:
- Faster connection establishment with 0-RTT handshakes
- Improved performance on unreliable networks
- Better handling of mobile connections
- Elimination of head-of-line blocking issues
- Enhanced security with built-in encryption
What is QUIC Test?
A QUIC test verifies if a server or browser supports the QUIC protocol, which is the foundation of HTTP/3. Our QUIC test tool checks for:
- QUIC protocol support and version compatibility
- Browser QUIC connection capability
- QUIC handshake performance
- UDP-based QUIC transport availability
Run a QUIC test regularly to ensure optimal performance for HTTP/3 connections.
Using our HTTP3 checker tool regularly helps ensure your website stays optimized with the latest web protocols.
Popular HTTP3 Test Examples
Example websites with HTTP3 enabled
Advanced HTTP3 Testing Options
Need to test specific IP addresses for HTTP3 support? Use our HTTP3 IP-Checker to check specific IP addresses and ports.
Understanding HTTP3 Test Results
When you use our HTTP3 checker tool, we test your domain for both QUIC and HTTP3 protocol support. Here's what the results mean:
QUIC Support
QUIC (Quick UDP Internet Connections) is the transport protocol that powers HTTP3. If your server supports QUIC, it means it's capable of handling connections over UDP rather than TCP, which can significantly improve performance.
HTTP3 Support
HTTP3 is the application layer protocol that runs on top of QUIC. A server with HTTP3 support can deliver web content using this latest protocol version, offering better performance especially on mobile and unreliable networks.
Connection Metrics
Our HTTP3 test tool provides detailed connection metrics that help you understand how your server is performing:
- Connection ID - A unique identifier for the QUIC connection
- Packet RX - Time between first packet sent and first received
- Handshake Done - Time to complete the connection handshake
Regular testing with our HTTP3 checker ensures your website stays optimized with the latest web protocols.