There is an excellent article in the latest ColdFusion Developers Journal on tutor help on how to enable GZip compression on your ColdFusion pages for free.
First, HTTP Compression is a great way to speed up your Website and lower bandwidth utilization all at the same time. In this example, your ColdFusion server (6.1 and above) will encode CFML output using GZIP and have the browser decompress this data on the fly. In a corporate environment, Webmasters may choose to go with third-party software such as Port80 Software’s httpZip, which can compress other files as well, including .js, .css, and your HTML files. In this example, we are only compressing the generated HTML output from a .cfm template execution.
I just implemented it on one of our servers in 2 minutes. It reduced a 7Kb page to only 2306 bytes.
Date: Wed, 28 Mar 2007 23:01:45 GMT Server: Microsoft-IIS/6.0 Content-Type: text/html; charset=UTF-8 Content-Encoding: gzip Content-Length: 2306 200 OK