HTTP/3 Test

Check if H3/QUIC is enabled on your website

Validating HTTP/3 protocol...

Validating HTTP/3 protocol...

Tested from     on  

Great! HTTP/3 is enabled. It supports the following protocol version.

Couldn’t connect over HTTP/3. Take advantage of the latest protocol HTTP/3 for better performance.

Header Value



About HTTP/3 Testing Tool

Ready for HTTP/3?

HTTP/3 or H3 is the upcoming HTTP (Hypertext Transport Protocol) version that leverages QUIC.

QUIC (Quick UDP Internet Connections) – as you can guess by the abbreviation, it is UDP based and built considering the Internet in mind. Ensuring the website or web application load faster across every device from everywhere is challenging, and H3 aim to help with that.

Once you have enabled H3 on your site, you can use Geekflare H3 testing tool to quickly find out if it supports. Tool is powered by cURL to connect using HTTP3 and show the supported versions.

Its still in draft so server and client support is limited.


Hand-picked best resources to supercharge
your Website and Business

Explore Resources

More tools for your Website


Check how quickly your server responds to the requests made by the browser

Test Now

DNS Record Lookup

DNS lookup for A, TXT, MX, SPF and NS records

Test Now

SPF Record Lookup

SPF Record Check

Test Now

IP Location

Find out where the IP address is located

Test Now

Whois Hosting

Find out the hosting provider of any site, quickly

Test Now

What’s My IP

Quickly find out public Internet IP

Test Now

Latest Articles