A quick guide on how to speed up by adding HTTP headers.
This is how to do it:
1. Log into your host account. (Bluehost, HostGator, etc).
2. Right click on .htaaccess file.
3. Click on Edit.
4. Paste this custom code below the line #END WordPress in .htaccess file.
<IfModule mod_headers.c>
Header set Connection keep-alive
</IfModule>
5. Click Save Changes.
That's how to enable keep-alive for faster page speed.
*Here is another tip on How To Remove Query Strings From Static Resources To Improve Page Speed.
