How to enable HTTP gzip compression on Apache/Httpd?

Question

I have a Centos 7 installation with apache / httpd running.

I have some large .html and .txt documents which it serves.

How do I enable gzip compression with DEFLATE?

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DEFLATE is present.

apachectl -t -D DUMP_MODULES |grep deflate
deflate_module (shared)

I added this to /etc/httpd/conf/httpd.conf:

<filesMatch "\.(js|html|css|txt)$">
    SetOutputFilter DEFLATE
</filesMatch>

Then restarted the server with:

systemctl restart httpd

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This still indicates it's not enabled: http://www.whatsmyip.org/http-compression-test/

Answer 1

insert this code on your htaccess file from website in source "htdoc" or "www", if you not have htcaccess, you want to create it:

# compress text, html, javascript, css, xml: 

AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/html
AddOutputFilterByType DEFLATE text/xml
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE application/xhtml+xml
AddOutputFilterByType DEFLATE application/rss+xml
AddOutputFilterByType DEFLATE application/javascript
AddOutputFilterByType DEFLATE application/x-javascript

everything should go fine.

Answer 2

Put this line into your VirtualHost:

SetOutputFilter DEFLATE

If you want some exclusions, then for instance:

SetEnvIfNoCase Request_URI "\.(?:gif|jpe?g|png)$" no-gzip

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For complete information about the DEFLATE module, visit this page.