What is "mod_pagespeed"?

To optimize performance and reduce digital impact, we've configured automatic conversion of images to WebP format on our servers. This format reduces file size without any perceptible loss of quality, improving website loading speed and user experience while reducing bandwidth consumption.

This conversion uses "mod_pagespeed", an open-source module developed by Google for Apache and Nginx web servers. This module aims to optimize website performance and the structure of their resources through filters.

On our servers, the following filters are enabled by default:

ModPagespeedEnableFilters convert_jpeg_to_webp
ModPagespeedEnableFilters convert_to_webp_lossless
ModPagespeedEnableFilters convert_to_webp_animated
ModPagespeedEnableFilters rewrite_css
ModPagespeedEnableFilters fallback_rewrite_css_urlsThese filters are compatible with AccelerateWP, so you can ignore the alert "AccelerateWP: Mod PageSpeed is not compatible with this plugin and may cause unexpected results." that it may display.

How do I disable "mod_pagespeed"?

• From your cPanel, go to the "Files" section then "File Manager":

• Edit your ".htaccess" file:

• If you don't see it, you need to check the "Show Hidden Files (dotfiles)" box in the cPanel settings located in the top right:

• Right-click the file then "Edit" to modify it:

cPanel-Edit-File-Confirmation

• And add the following lines to your file:

ModPagespeed offThe "mod_pagespeed" module is now disabled on your webpage.

How do I configure "mod_pagespeed"?

You can apply "mod_pagespeed" filters by editing the ".htaccess" file with the following syntax:

ModPagespeedEnableFilters filter1,filter2,filter3Here is a complete list of the filters offered by the module:

https://www.modpagespeed.com/doc/config_filters

How do I disable a filter?

If you want to disable one or more filters, follow this syntax when editing your ".htaccess" file:

ModPagespeedDisableFilters filter1,filter2,filter3

Updated on: 17/07/2026