Problem with Nginx WebP and srcset tag.

  • Resolved llmanull

    (@llmanull)


    8 years, 6 months ago

    *Premise*
    Hi guys, I have a vps with Debian 8, Nginx 1.6.2, ModSecurity, Page Speed, fail2ban, WordPress 4.6.1
    As image plugins use EWWW Image Optimizer

    *Problem*

    On nginx to show webp I followed this tutorial:

    https://www.lazutkin.com/blog/2014/02/23/serve-files-with-nginx-conditionally/

    Indeed, the images in “scr” tags are shown in webp, however in “srcset” tags are shown in their original format (.jpg .png etc ..).

    I leave you an example link:

    https://benessereesalute.org/2016/08/test-paginazione-3/

    As you see in the image source, in the “src” tag it is webp but I have problems with “srcset”.
    I don’t want to remove this new WordPress tag, I would look for a solution because in Apache with .htaccess works. On nginx I can not find an alternative.

    Apache .htaccess works:

    <IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond% {} HTTP_ACCEPT image / webp
RewriteCond% {REQUEST_FILENAME} (. *) \. (Jpe? G | png) $
REQUEST_FILENAME RewriteCond% {} \. Webp -f
RewriteRule (. +) \. (Jpe? G | png) $% {} REQUEST_FILENAME .webp [T = image / webp, E = accept: 1]
</ IfModule>
<IfModule mod_headers.c>
Header append Vary Accept env = REDIRECT_accept
</ IfModule>
AddType image / webp .webp

    Ideas?

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