Apache GZIP

gziphtaccess

<IfModule mod_deflate.c>

# Force deflate for mangled headers developer.yahoo.com/blogs/ydn/posts/2010/12/pushing-beyond-gzipping/
<IfModule mod_setenvif.c>
  <IfModule mod_headers.c>
    SetEnvIfNoCase ^(Accept-EncodXng|X-cept-Encoding|X{15}|~{15}|-{15})$ ^((gzip|deflate)\s,?\s(gzip|deflate)?|X{4,13}|~{4,13}|-{4,13}$
    RequestHeader append Accept-Encoding "gzip,deflate" env=HAVE_Accept-Encoding
  </IfModule>
</IfModule>

# HTML, TXT, CSS, JavaScript, JSON, XML, HTC:
<IfModule filter_module>
  FilterDeclare   COMPRESS
  FilterProvider  COMPRESS  DEFLATE resp=Content-Type /text/(html|css|javascript|plain|x(ml|-component))/
  FilterProvider  COMPRESS  DEFLATE resp=Content-Type /application/(javascript|json|xml|x-javascript)/
  FilterChain     COMPRESS
  FilterProtocol  COMPRESS  change=yes;byteranges=no
</IfModule>

</IfModule>