I enabled compression with Optimize Website in cPanel but Tomcat pages are not compressed

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The 'Optimize Website' function of cPanel places mod_deflate directives in .htaccess file in your home directory.

For requests that are mapped to your application server (this is very common setup for JVM Host clients) the Apache webserver

skips reading of .htaccess thus making the compression inactive for these requests.

In such case please open a ticket and we will copy your existing compression settings from ~/.htaccess to

/etc/httpd/conf/userdata/std/2/[USERNAME]/[DOMAIN]/deflate.conf

where these will be honored by the webserver.

Example configuration for compressing all contents - as generated by cPanel - is:

SetOutputFilter DEFLATE

# Netscape 4.x has some problems...

BrowserMatch ^Mozilla/4 gzip-only-text/html

# Netscape 4.06-4.08 have some more problems

BrowserMatch ^Mozilla/4\.0[678] no-gzip

# MSIE masquerades as Netscape, but it is fine

# BrowserMatch \bMSIE !no-gzip !gzip-only-text/html

# NOTE: Due to a bug in mod_setenvif up to Apache 2.0.48

# the above regex won't work. You can use the following

# workaround to get the desired effect:

BrowserMatch \bMSI[E] !no-gzip !gzip-only-text/html

# Don't compress images

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

</IfModule>

# Make sure proxies don't deliver the wrong content

Header append Vary User-Agent env=!dont-vary

</IfModule>