Title: WEBP
Last modified: April 5, 2025

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# WEBP

 *  Resolved [hammertimeguns](https://wordpress.org/support/users/hammertimeguns/)
 * (@hammertimeguns)
 * [1 year, 5 months ago](https://wordpress.org/support/topic/webp-41/)
 * When I try to do the WEBP conversion I get the following error [Required WebP shell functions are not available on the server.](https://hammeroutdoorsports.com/wp-admin/admin.php?page=WP-Optimize)
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fwebp-41%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 1 replies (of 1 total)

 *  Plugin Support [Damilare](https://wordpress.org/support/users/deabiodun/)
 * (@deabiodun)
 * [1 year, 5 months ago](https://wordpress.org/support/topic/webp-41/#post-18402971)
 * Hi [@hammertimeguns](https://wordpress.org/support/users/hammertimeguns/)!
 * The error you are getting signifies that your hosting provider may have disabled
   some PHP functions required for WPO to function properly.
 * Please check with them to confirm that one or more of the following functions
   have not been disabled
    - escapeshellarg,
    - exec,
    - shell_exec,
    - passthru,
    - system,
    - proc_open
 * Everything should work fine once that restriction is removed.
 * Regards.

Viewing 1 replies (of 1 total)

 The topic ‘WEBP’ is closed to new replies.

 * ![](https://ps.w.org/wp-optimize/assets/icon-256x256.png?rev=1552899)
 * [WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance](https://wordpress.org/plugins/wp-optimize/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-optimize/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-optimize/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-optimize/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-optimize/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-optimize/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Damilare](https://wordpress.org/support/users/deabiodun/)
 * Last activity: [1 year, 5 months ago](https://wordpress.org/support/topic/webp-41/#post-18402971)
 * Status: resolved