Which mod_pagespeed functions do you support?
Your Web Hosting (cPanel) account can use mod_pagespeed, an open-source module that optimizes Web pages and their resources for better performance.  For more information, see Google's documentation.
 You can enable it on your hosting account through a .htaccess file. Here's an example of the coding you can include in your .htaccess file to enable the Extend Cache function:
<IfModule pagespeed_module>
   ModPagespeed on
   ModPagespeedEnableFilters extend_cache
</IfModule>
You can enable the following functions using the ModPagespeedEnableFilters directive:
| Function | pagespeed.conf Code | 
|---|---|
| Extend Cache | extend_cache | 
| Collapse Whitespace | collapse_whitespace | 
| Combine CSS | combine_css | 
| Move CSS to HEAD | move_css_to_head | 
| Elide Attributes | elide_attributes | 
| Remove Comments | remove_comments | 
For more information about a mod_pagespeed function, click its link from the Function column.
Other Features of mod_pagespeed
You can also enable the following directives in the .htaccess file:
- ModPagespeedDisallow
- ModPagespeedAllow
- ModPagespeedMapOriginDomain
- ModPagespeedMapRewriteDomain
For more information about using these directives, see Using mod_pagespeed.
We are still testing any mod_pagespeed functions not yet listed for compatibility, performance, and reliability. Because mod_pagespeed is still in a beta offering, its features might change. We also cannot guarantee that any enabled modules will not conflict with your website's existing content.