for GIF, JPEG and PNG.
<highlight language="config">
FilterProvider unpack jpeg_unpack "%{CONTENT_TYPE} = 'image/jpeg'"
-FilterProvider unpack gif_unpack "%{CONTENT_TYPE} = 'image/gif'"
-FilterProvider unpack png_unpack "%{CONTENT_TYPE} = 'image/png'"
+FilterProvider unpack gif_unpack "%{CONTENT_TYPE} = 'image/gif'"
+FilterProvider unpack png_unpack "%{CONTENT_TYPE} = 'image/png'"
FilterProvider downsample downsample_filter "%{CONTENT_TYPE} = m|^image/(jpeg|gif|png)|"
FilterProtocol downsample "change=yes"
FilterProvider repack jpeg_pack "%{CONTENT_TYPE} = 'image/jpeg'"
-FilterProvider repack gif_pack "%{CONTENT_TYPE} = 'image/gif'"
-FilterProvider repack png_pack "%{CONTENT_TYPE} = 'image/png'"
+FilterProvider repack gif_pack "%{CONTENT_TYPE} = 'image/gif'"
+FilterProvider repack png_pack "%{CONTENT_TYPE} = 'image/png'"
<Location "/image-filter">
FilterChain unpack downsample repack
</Location>