🔍 QUIC / HTTP/3 Connection Diagnostic

Tests whether your browser + network support HTTP/3 (QUIC over UDP:443)

Overall Verdict: Running tests...
Browser:
Timestamp:

🧠 Browser Capability

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🌐 Cloudflare Trace

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📡 HTTP/3 Endpoint Probes

Testing protocol negotiation via Performance API nextHopProtocol

Same-origin (this Cloudflare Pages site) + CORS-enabled endpoints. Two passes to detect Alt-Svc upgrade.

🚀 WebTransport (QUIC)

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🛡 Network Inference

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📋 Raw diagnostic log