I just used yslow to enhance the performance of my site. I managed to bring it from lowest grade F to grade B - nice!

This firefox plugin can be run on any website and shows 22 indicators how your site performs (= basically what is happening when the site loads in your browser). Some easy things you can score on: 1. put the JS at the bottom of your documents, 2. make fewer HTTP requests (putting more scripts into one file, because the browser loads only 2 files at the same time!) and 3. "pack" code files (eliminating white spaces - there are tools for this, see packer and jscompress (my bookmarks).

Chapter 3 of "building findable websites" (see reading list) describes how this works and much more.

Yslow for faster websites!

Bob Belderbos

Software Developer, Pythonista, Data Geek, Student of Life. About me