9 Tips for Speeding Joomla!
If you've read "Tips for Speeding up and Increasing SEO on Joomla!" you might still be wanting some more information regards to improving your Joomla! website speed and search engine rankings. So here they are:
Enable the cache option and GZIP compression in global configuration. Please be aware that signs of caching can take time for the effects to kick in. Also Virtuemart, at present, doesn't allow these features.
Minimise the number of components and modules that you use. The more you operate the slower the site will run.
Limit the size your image files.
Avoid using external website feeds, modules...