Everyone wants to get things done quickly while they are surfing the web, so it is quite obvious that people want a website’s page to load fast. Although those days are gone when pages took a lot of time to load but still there is still room for improvement.
1. Site Load Test
SquishIt has a Google Group and the discussion forum that can help you even more. You can obviously get advice and opinions from there.
This app is incorporated in other projects too. You can use its plugin if you have WordPress: WP Minify and W3 Total Cache.
6. Google Closure Compiler
7. YUI Compressor