This test can check HTTP and HTTPS but most browsers only support HTTP/2 for HTTPS, which means you must migrate to HTTPS if you want to take advantage of the performance benefits. HTTP/2 introduces other improvements, more details: HTTP/2 RFC7540 Domain sharding and asset concatenation is no longer needed with HTTP/2.It reduces additional round trip times (RTT), making your website load faster without any optimization.It uses the new ALPN extension which allows for faster-encrypted connections since the application protocol is determined during the initial connection.It allows servers to “push” responses proactively into client caches instead of waiting for a new request for each resource.It uses header compression HPACK to reduce overhead.It is fully multiplexed, sending multiple requests in parallel over a single TCP connection.

A list of browsers that support HTTP/2 can be found on. The successor of HTTP/1.1 brings significant improvement in efficiency, speed and security and is supported by most modern web browsers. The new HTTP protocol is needed to keep up with the exponential growth of the web. HTTP/2 is the first major HTTP protocol update since 1997 when HTTP/1.1 was first published by the IETF. It is the clients responsibility to check the thorized property to determine if the server certificate was signed by one of the specified CAs.

Rest test test tls 1.2