QUIC Client Test

Your Web Browser

HTTP User-AgentMozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
QUIC Connection

QUIC Fingerprints

JA4
JA4_r
HTTP3
HTTP3 Hash
JavaScript Disabled. JSON available at: https://quic.browserleaks.com/.

QUIC Connection

DCID
DCID Length
RTT
MTU Estimate
Conn Start Time
Conn Idle Timeout
Conn Duration
Conn Requests

QUIC Initial Packets

HTTP/3 Frames

QUIC-TLS Handshake

TLS Protocol
Cipher Suite
Key Exchange

Supported Cipher Suites (in order as received)

Supported TLS Extensions (in order as received)

TLS Extensions

Further Reading

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