Author: Michael Schröpl

Other ressources

Sadly, remotecommunications.com who had originally published mod_gzip have turned away from this product during the year 2002 and removed their product pages from their server. Therefore I have removed nearly all links to their pages from my documents as well.

Sources for mod_gzip 1.3.x.

• The new home page of the mod_gzip project from version 1.3.19.2a on
• A port of mod_gzip 1.3.19.1a for OS/2

Besides this, Günter Knauf provides precompiled versions for certain OS platforms:

• mod_gzip 1.3.x for Netware
• mod_gzip 1.3.x for Windows

Sources for mod_gzip 2.0.x

Günter Knauf adapts some existing version of mod_gzip 2.0.x (that has forked from the Apache 1.3 version's development tree a long time ago) to the current Apache version:

• mod_gzip 2.0.x for Netware
• mod_gzip 2.0.x for Windows
• mod_gzip 2.0.x for UNIX

Documentation about mod_gzip

The most detailled documentation about mod_gzip known to me is the one you are currently reading. It is also part of the mod_gzip download package and thus might be considered as the 'official' documentation.

• Official mailing list for mod_gzip
• The mod_gzip with SSL mini howto by Tim Behrendsen, a posting to the mod_gzip mailing list
• HTTP Compression Speeds up the Web, an extensive article about HTTP compression in general and mod_gzip in particular
• mod_gzip Komprimierungsmodul, a (german!) article by Mindjuggler about installation and configuration of mod_gzip focussing some special operational fields (SSL, Tomcat, BEA Weblogic Plugin)

Supplementary programs for mod_gzip

• Project page for mgzta, my own traffic evaluation program for mod_gzip
• Home page for mgstat, another traffic evaluation program for mod_gzip
• HTTP trace - my own online script for viewing header contents being sent and received during a HTTP request
• mod_gzip Test - some PHP script computing and displaying the volume savings of a gzip compressed HTTP ressource

Other HTTP compression solutions

• mod_deflate - a standard module for compression of served HTTP content (for Apache 2.0 only)
• gzip_cnc - my own compressing solution (implemented as Perl CGI script, embedded as Apache handler)

Further Reading

• Speed Up Your Site: Web Site Optimization - a book by Andrew B. King about different methods for optimizing ressources (tuning of HTML, CSS, JavaScript, graphics, multimedia) and transport procedures (compression, caching) to speed up the transfer of web content
• www.webperformance.org - Stephen Pierzchala maintains a collection of articles and links about the topic 'compression of web contents'
• Apache, Compression and Bandwidth - an overview about several HTTP compression tools for Apache and IIS
• Simple Test of Compressing HTML Using ZLib - a W3C article about why XHTML can be compressed more effectively than HTML
• Web Content Compression FAQ - a collection of hints and FAQs about Web compression

About the author:

Michael Schröpl has studied computer science and is now working as a system analyst for Telekurs (Deutschland) GmbH. He likes programming and writing articles about certain features of the Apache web server.