HTTP3 Test for Websites in Bulk

Check if your website supports the next-generation HTTP/3 protocol

Example: sellbuystuffs.com is an HTTP/3 Enabled Website

Long Tail Keywords

HTTP/3 is the advanced and newest protocol version, and it is the fastest protocol as compared to HTTP/2 and HTTP/1.1. If your Website or Hosting supports HTTP/3, your website will load faster than those using older protocols.

This test makes a CURL request to your website and checks the header response to determine if your website supports HTTP/3. An example of HTTP/3 header response: alt-svc: h3-24=":443"; ma=86400, h3-23=":443"; ma=86400 confirms your website supports HTTP/3 Protocol.

Key Characteristics:
  • Built on QUIC: Leverages the QUIC protocol for transport, offering advantages over TCP
  • Faster: QUIC's connection establishment, multiplexing, and improved congestion control contribute to faster website loading
  • More Reliable: Handles network changes and packet loss more gracefully
  • More Secure: Integrates encryption into the transport layer
How HTTP/3 Works:
  • Connection Establishment: Client and server exchange QUIC handshake messages
  • Multlexing: Multiple requests and responses can be sent over a single QUIC connection
  • 0-RTT Resumption: Allows clients to send data immediately upon connection resumption
  • Improved Congestion Control: More adaptive and responsive to network conditions
Benefits of HTTP/3:
  • Faster Page Load Times
  • More Reliable Connections
  • Improved Security
  • Better Performance on Mobile Networks
  • Reduced Server Load