GZIP Komprimierung falls vom Clientüber den HTTP-Header akzeptiert in der .htaccess für den Apache Webserver aktivieren.
In der folgenden Konfiguration wird berücksichtigt ob der Client (Browser) laut seinem HTTP-Header ein Encoding (gzip/deflate) unterstützt, falls der Content-type dann noch DEFLATE unterstützt wird er komprimiert und dem Response HTTP-Header die Info über das Encoding hinzugefügt.
# Deflate Compression by FileType
<IfModule mod_deflate.c>
#Force compression for mangled headers.
<IfModule mod_setenvif.c>
<IfModule mod_headers.c>
SetEnvIfNoCase ^(Accept-EncodXng|X-cept-Encoding|X{15}|~{15}|-{15})$ ^((gzip|deflate)\s*,?\s*)+|[X~-]{4,13}$ HAVE_Accept-Encoding
RequestHeader append Accept-Encoding "gzip,deflate" env=HAVE_Accept-Encoding
</IfModule>
</IfModule>
# Compress all output labeled with one of the following MIME-types
# (for Apache versions below 2.3.7, you don't need to enable `mod_filter`
# and can remove the `<IFModule mod_filter.c>` and `</IFModule>` lines
# as `AddOutputFilterByType` is still in the core directives).
<IfModule mod_filter.c>
AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/html
AddOutputFilterByType DEFLATE text/xml
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE text/javascript
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE application/xhtml+xml
AddOutputFilterByType DEFLATE application/rss+xml
AddOutputFilterByType DEFLATE application/atom_xml
AddOutputFilterByType DEFLATE application/javascript
AddOutputFilterByType DEFLATE application/x-javascript
AddOutputFilterByType DEFLATE application/x-shockwave-flash
AddOutputFilterByType DEFLATE application/gpx+xml
AddOutputFilterByType DEFLATE application/atom+xml
AddOutputFilterByType DEFLATE application/json
AddOutputFilterByType DEFLATE application/vnd.ms-fontobject
AddOutputFilterByType DEFLATE application/x-font-ttf
AddOutputFilterByType DEFLATE application/x-web-app-manifest+json
AddOutputFilterByType DEFLATE font/opentype
AddOutputFilterByType DEFLATE image/svg+xml
AddOutputFilterByType DEFLATE image/x-icon
AddOutputFilterByType DEFLATE text/x-component
AddOutputFilterByType DEFLATE application/font-woff
AddOutputFilterByType DEFLATE font/woff2
</IfModule>
</IfModule>