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mod_pagespeed does not work with Koken

Sven Flock

Mar 07, 2019 09:15AM EST

Hi all,

I have successfully installed Koken on my on virtual private server (including root access). I have globally mod_pagespeed (Apache 2.4.25) in use with the following parameters:

<IfModule pagespeed_module>
# Turn on mod_pagespeed. To completely disable mod_pagespeed, you
# can set this to "off".
ModPagespeed on

ModPagespeedEnableFilters prioritize_critical_css
ModPagespeedEnableFilters convert_png_to_jpeg,convert_jpeg_to_webp
ModPagespeedEnableFilters collapse_whitespace,remove_comments
ModPagespeedEnableFilters responsive_images,resize_images
ModPagespeedDisallow .png
ModPagespeedEnableFilters rewrite_images
ModPagespeedEnableFilters combine_css
ModPagespeedEnableFilters combine_javascript
ModPagespeedEnableFilters rewrite_css



All my other virtual hosts make use of that configuration, but my virtual host with Koken does not.

Running my site at with my domain ( shows a valid header but looking at the source code from the page nothing has happend (e.g. combine all css files). For some reason, it is completely ignored. My other virtual host ( shares above settings and everything is working here).

Is there some rewrite rule or other setting active which blocks mod_pagespeed?


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