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enabling apache to serve WebP image files if accepted by browser (and .webp files available)
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## !! This snippet has been updated, but not tested in practice. It should work, please check / leave comments in case it doesn't. !! ## | |
# originally from https://groups.google.com/a/webmproject.org/group/webp-discuss/browse_thread/thread/196ac4ea705688d8 | |
<IfModule mod_rewrite.c> | |
# TODO: don't forget to put | |
# AddType image/webp .webp | |
# in your mods-available/mime.conf | |
# (though this is optional because we're setting | |
# the mime type manually in the RewriteRule) | |
# Enable rewrite | |
RewriteEngine On | |
# Does browser support WebP? | |
RewriteCond %{HTTP_ACCEPT} \bimage/webp\b | |
# Capture image name | |
RewriteCond %{REQUEST_URI} (.*)\.(jpe?g|png)$ | |
# if you don't have all jpg/png images available | |
# as webp then you want to uncomment the next line | |
# so apache first checks if there is a webp file | |
# otherwise leave it disabled as it removes the | |
# need to query the disk | |
#RewriteCond %{DOCUMENT_ROOT}%1.webp -f | |
# Route to WebP image | |
RewriteRule .* %1\.webp [L,T=image/webp] | |
<IfModule mod_headers.c> | |
<FilesMatch "\.(jpe?g|png)$"> | |
Header append Vary Accept | |
</FilesMatch> | |
</IfModule> | |
</IfModule> |
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