Hi, It is the Varied image mode.
I have the .htacces file in the Folder. Here is the Copy:
# BEGIN WebP Express
<IfModule mod_rewrite.c>
RewriteEngine On
# Redirect to existing converted image in cache-dir (if browser supports webp)
RewriteCond %{HTTP_ACCEPT} image/webp
RewriteCond %{REQUEST_FILENAME} -f
RewriteCond %{DOCUMENT_ROOT}/wp-content/webp-express/webp-images/doc-root/wp-content/$1.$2.webp -f
RewriteRule ^/?(.+)\.(jpe?g|png)$ /wp-content/webp-express/webp-images/doc-root/wp-content/$1.$2.webp [NC,T=image/webp,E=EXISTING:1,L]
# Set Cache-Control header so these direct redirections also get the header set
<IfModule mod_headers.c>
<FilesMatch “\.webp$”>
Header set Cache-Control “private, max-age=31536000”
</FilesMatch>
</IfModule>
# Pass REQUEST_FILENAME to webp-on-demand.php in request header
RewriteCond %{HTTP_ACCEPT} image/webp
RewriteCond %{REQUEST_FILENAME} -f
RewriteRule ^(.*)\.(jpe?g|png)$ – [E=REQFN:%{REQUEST_FILENAME}]
<IfModule mod_headers.c>
RequestHeader set REQFN “%{REQFN}e” env=REQFN
</IfModule>
# Redirect images to webp-on-demand.php (if browser supports webp)
RewriteCond %{HTTP_ACCEPT} image/webp
RewriteCond %{REQUEST_FILENAME} -f
RewriteCond %{QUERY_STRING} (.*)
RewriteRule ^/?(.+)\.(jpe?g|png)$ /wp-content/plugins/webp-express/wod/webp-on-demand.php?wp-content=wp-content&%1 [NC,L]
<IfModule mod_headers.c>
<IfModule mod_setenvif.c>
# Set Vary:Accept header for the image types handled by WebP Express.
# The purpose is to make CDN aware that the response varies with the Accept header, so it should not just use the URL as cache key, but also the Accept header.
SetEnvIf Request_URI “\.(jpe?g|png)” ADDVARY
Header append “Vary” “Accept” env=ADDVARY
# Set X-WebP-Express header for diagnose purposes
# Apache appends “REDIRECT_” in front of the environment variables defined in mod_rewrite, but LiteSpeed does not.
# So, the next line is for Apache, in order to set environment variables without “REDIRECT_”
SetEnvIf REDIRECT_EXISTING 1 EXISTING=1
Header set “X-WebP-Express” “Redirected directly to existing webp” env=EXISTING
</IfModule>
</IfModule>
</IfModule>
<IfModule mod_mime.c>
AddType image/webp .webp
</IfModule>
# END WebP Express
