Em Shreve

This plugin implements gzip output compression to speed up load times.
The plugin also does a check to see if browsers are incorrectly saying that they do not support GZIP when they actually do. This can speed up load times for a significant portion of users.
<pre><code>For requests with missing or mangled Accept-Encoding headers, inspect the User-Agent to identify browsers that should understand gzip.
* Test their ability to decompress gzip.
* If successful, send them gzipped content!
</code></pre>
See:
<ul>
<li>http://www.stevesouders.com/blog/2010/07/12/velocity-forcing-gzip-compression/</li>
<li>http://en.oreilly.com/velocity2010/public/schedule/detail/14334</li>
<li>http://wpdevel.wordpress.com/2010/07/13/forcing-gzip-httpwww-stevesouders-co/</li>
</ul>

Force gzip

Implements gzip output compression to speed up load times and does a check to see if browsers are incorrectly saying that they do not support GZIP whe …

tobias_.MerZ

With this Plugin you can activate Browser Caching and GZIP Compression on your Apache Webserver. 
With Browser Caching you can tell Browsers when your files usually change, e.g. every month, every week, etc. This will speed up your website because Browser will only make requests to your Server after the declared time. PageSpeed is a Google Ranking Factor so it is important to have a fast website. 
There a several ways to enable Browser Caching. This Plugin uses Expires. The following code will be added to your .htaccess file: 
ExpiresActive On
ExpiresByType text/css “access plus 1 month”
ExpiresByType text/javascript “access plus 1 month”
ExpiresByType text/html “access plus 1 month”
ExpiresByType application/javascript “access plus 1 month”
ExpiresByType application/x-javascript “access plus 1 month”
ExpiresByType application/xhtml-xml “access plus 1 month”
ExpiresByType image/gif “access plus 1 month”
ExpiresByType image/jpeg “access plus 1 month”
ExpiresByType image/png “access plus 1 month”
ExpiresByType image/x-icon “access plus 1 month”
With GZIP Compression your files will be compressed before they get sent to the client. This also makes your Website faster. The following code will be added to your .htaccess file:


Header append Vary User-Agent env=!dont-vary

AddOutputFilterByType DEFLATE text/css text/x-component application/x-javascript application/javascript text/javascript text/x-js text/html text/richtext image/svg+xml text/plain text/xsd text/xsl text/xml image/x-icon application/json

DEFLATE by extension
AddOutputFilter DEFLATE js css htm html xml

Optimizer For Faster Websites

Optimizer For Faster Websites will make your Website faster by caching and compressing files.

Force gzip vs Optimizer For Faster Websites