HTTP/2 Test

What is the HTTP/2.0 protocol?

HTTP/2 (aka HTTP/2.0) is the successor to the HTTP/1.1 protocol and represents a breakthrough in web communication efficiency. Unlike its predecessor, HTTP/2 introduces several groundbreaking features designed to improve security, speed and overall performance. HTTP/2 optimizes data transfer between servers and clients by introducing multiplexing, allowing multiple requests and responses to be exchanged simultaneously over a single TCP connection. This significantly reduces latency and speeds up page loading times, which in turn improves also the search engine ranking and provides a more responsive user experience.

How to enable HTTP/2 protocol on Nginx

Befor begine, remember that HTTP/2 protocol is supported on Nginx v1.9.5 and onwards.

Edit your Nginx vHost configuration file and add these lines:

server { listen 443 ssl http2; server_name domain.com; ssl_certificate /path/to/ssl/certificate; ssl_certificate_key /path/to/ssl/private/key; ... }

Then restart Nginx for the changes to take effect:

service nginx restart

Example HTTP response header of HTTP/2

You can see the HTTP/2 is present in the response status message:

HTTP/2 200 server: Apache date: Sun, 24 Mar 2024 16:03:03 GMT content-type: text/html; charset=UTF-8 vary: Accept-Encoding strict-transport-security: max-age=63072000 content-encoding: gzip