Pixboost automatically supports HTTP/3 protocol.
HTTP/3 was created to improve efficiency of the existed HTTP protocol by including several features:
HTTP/3 has better earlier data support
HTTP/3 has much faster handshakes
HTTP/3 does not exist in an insecure or unencrypted version.
This all makes it easier to deliver fast and efficient website. More on HTTP/3 protocol please read it's official page.