How do I know if my website is being served over HTTP or HTTP/2?

Apache doesn't have to support it. The Chrome extension reads the HTTP headers to determine that.

Another method is simply to look at the network tab > headers > response headers > view source in Chrome or Firefox. There the headers can be seen. It should read "HTTP/2" or some sort I can't recall right now.

Easiest: You can use curl -I <your site> which will put the HTTP response as the first line.

HTTP/2.0 200
server:nginx
date:Fri, 29 Apr 2016 14:31:40 GMT
content-type:text/html; charset=utf-8
content-length:7629
last-modified:Thu, 07 Apr 2016 02:41:08 GMT
....

Here's another method that may be easier, if you don't have ready access to command-line and cURL, or you're navigating several layers of CDN (e.g. if your HTTP/2 is being provided by a provider like CloudFlare).

  1. Open Chrome Dev Tools (Ctrl-Shift-I)
  2. Open the Network tab
  3. If your page has already loaded, you may need to refresh (Ctrl-R)
  4. Right-click on the header row of the request list (the row labelled: Name, Method, Status, etc.)
  5. Select Protocol from the context menu.
  6. You may need to refresh again (Ctrl-R), and you will see all the protocols being used.

Chrome Dev Tools Screenshot.

If you see h2, then congratulations! Your website is being served over HTTP/2.


For people using Nginx, you can view the access log which is usually located at /var/log/nginx/access.log and look for lines like

167.220.232.9 - - [12/Feb/2018:15:09:04 +0800] "GET / HTTP/2.0" 200 2546 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36 Edge/16.16299"

Tags:

Http

Http2

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