Issue

Gzip compression wordpress
SEO recommends to enable gzip compression on web contents.
Enable gzip on your website to improve the Page Speed Grade on gtmetrix.com and load time on webpagetest.org
How do i enable gzip without root access to the server ?
How do i enable gzip with .htaccess rules.
How do i enable gzip compression on my wordpress / joomla / django website.

Environment

Websites running on Apache web-server.
All shared hosting accounts.

Solution

Add the following content to your .htaccess File.

# Gzip Start
<FilesMatch "\.(js|css|xml|gz)$">
Header append Vary: Accept-Encoding
SetOutputFilter DEFLATE
AddOutputFilterByType DEFLATE text/html text/css text/plain text/xml application/x-javascript application/x-httpd-php
BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch ^Mozilla/4\.0[678] no-gzip
BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
BrowserMatch \bMSI[E] !no-gzip !gzip-only-text/html
SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip
Header append Vary User-Agent env=!dont-vary
</FilesMatch>
# Gzip End

Now go to gtmetrix.com and test your site. You should see 100% gzip compression.