How to enable either Gzip or Deflate compression via .htaccess and which one is best these days? Code examples needed.
HTML5 Boilerplate (http://html5boilerplate.com) offers what seems to be the best and most effective solution setting along with plenty of others like caching, mime types etc. Highly recommended.
EDIT: Since this question and answer keep getting upvoted after couple of years I'm putting H5BP server configs link for more complete optimization.
EDIT: fixed link to https://github.com/h5bp/server-configs-apache
See the Apache mod_deflate documentation, specifically, the "compress everything except images" example. It has worked well for me and would be put into an
.htaccess file as follows:
<IfModule mod_deflate.c> # Insert filter SetOutputFilter DEFLATE # Netscape 4.x has some problems... BrowserMatch ^Mozilla/4 gzip-only-text/html # Netscape 4.06-4.08 have some more problems BrowserMatch ^Mozilla/4\.0 no-gzip # MSIE masquerades as Netscape, but it is fine # BrowserMatch \bMSIE !no-gzip !gzip-only-text/html # NOTE: Due to a bug in mod_setenvif up to Apache 2.0.48 # the above regex won't work. You can use the following # workaround to get the desired effect: BrowserMatch \bMSI[E] !no-gzip !gzip-only-text/html # Don't compress images SetEnvIfNoCase Request_URI \ \.(?:gif|jpe?g|png)$ no-gzip dont-vary # Make sure proxies don't deliver the wrong content Header append Vary User-Agent env=!dont-vary </IfModule>
And, of course, make sure that you have the following in your
httpd.conf file to enable
LoadModule deflate_module libexec/apache2/mod_deflate.so
I enabled deflate on static assets on my site (by MIME type) using the following added to the
.htaccess file at the root of my
You can also enable it by file extension, though I don't have the syntax for that handy.