Support » Plugin: EWWW Image Optimizer » Webp issue and questions

  • Resolved pictibe



    we love to use ewww on our sites and booked sometimes the premium service but with the webp we have some issues we don’t understand.

    We activate the “jpg/png to webp” and “force webp” checkbox in settings and after reload on the right bottom the green webp image appears.

    Under tab “basis” this text appears (partly German):
    “Your site appears to be missing mod_rewrite, please contact your webhost or system administrator to enable this Apache module.

    Your site appears to be missing mod_headers, please contact your webhost or system administrator to enable this Apache module.

    Es gibt viele Wege, WebP-Bilder an die Besucher mit unterstützten Browsern auszuliefern. Sie können wählen was Sie mögen, aber es wird empfohlen sie über eine .htaccess Datei mittels mod_rewrite und mod_headers auszuliefern. Das Plugin kann die Regeln für Sie eintragen, falls die Datei beschreibbar ist, oder Sie können die .htaccess selbst ändern.

    Regeln erfolgreich geprüft”

    And because of this message i dont understand if it works fine or not?

    The Redirection 404 tracking tells me a lot of errors but in frontend it seems to work for me in Firefox, Chrome and Safari.


    You can test it under:

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  • Plugin Author nosilver4u


    Hi, I checked your site, and I don’t see anything that would require you to use Force WebP. It does appear your site is serving WebP images, and there’s a video on this page that shows you how to see that for yourself:

    I am not familiar with the Rediection 404 plugin, but I did notice there was a JS (JavaScript) error on your website, and that could certainly cause some issues if left uncorrected.
    Plugins that minify/compress JS files can sometimes cause these errors, so I would turn off your minification plugin and see if the error is still visible in the browser console.
    If you’re not familiar with the dev console, just watch the video in that article, and it’ll show you how to open it. In this case, the actual Console tab is what you’re looking for to see if the error goes away.

    If you need further assistance, please let us know:

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