Walkthrough of gZip in Joomla. Shows you some of the extensions as well as the default Joomla gZip. gZip improves your sites speed and performance, it even can help your SEO. Full tutorial: Walkthrough of gZip in Joomla. Shows you some of the extensions as well as the default Joomla gZip. gZip improves your sites speed and performance, it even can help your SEO. Full tutorial: http://crewdesigns.net/blog/item/how-to-gzip-joomla-2