Enable HTTP/2 on your webserver and speed up your blog, website, or application. HTTP/2 improves the speed by loading all scripts, CSS parallel instead of one by one. You can read more about HTTP/2 at Google official.

How HTTP/2 boost the speed of a website or blog?
On HTTP1.1, every website component loads one after another, but in HTTP/2, each type of file loads together synchronously. That means it loads all CSS files in once and then JS, so the time taken is less than HTTP/1.1. So it will be a good practice to enable HTTP/2 for your web server.
The HTTP/2 is a lot faster than that of HTTP1.1. So it would be best if you considered enabling the HTTP/2 feature.
How to Enable HTTP/2?
You can enable HTTP/2 just by editing bitnami.conf file of your bitnami WordPress nginx stack. To do this, you’ve to execute the following command.
sudo -i
Command for older structure for Bitnami WordPress NGINX
nano opt/bitnami/nginx/conf/bitnami/bitnami.conf
If you installed bitnami stack on or after 17 May 2021, execute the following command.
nano /opt/bitnami/nginx/conf/server_blocks/wordpress-https-server-block.conf
Now the .conf file will open up. You’ve to add http2 in the 443 server connection block as displayed below.
server {
listen 443 ssl http2;
server_name localhost;
ssl_certificate server.crt;
ssl_certificate_key server.key;
ssl_certificate
ssl_session_cache shared:SSL:1m;
ssl_session_timeout 5m;
ssl_session_tickets off;
ssl_stapling on;
ssl_stapling_verify on;
ssl_ciphers HIGH:!aNULL:!MD5;
# ssl_prefer_server_ciphers on;
# include "/opt/bitnami/nginx/conf/bitnami/phpfastcgi.conf";
include "/opt/bitnami/nginx/conf/bitnami/bitnami-apps-prefix.conf";
}
Save the settings by pressing ctrl+X, then Y, and then press enter to update the changes.
Now you can check that all the settings you made are correct using the following command line.
nginx -t
If all settings are correct, you can restart nginx to load a new configuration.
sudo /opt/bitnami/ctlscript.sh restart nginx
After the restart, you can check the HTTP/2 status of your website, which will result as enabled. Improve server security by hiding the nginx server version.