YSlow and Page Speed both are very useful, FREE tools for optimization experts. Personally, I use both of them. Both have some defined rulesets and options to create on your own by modifying a ruleset. This recipe will let us apply those rules in our application.
Most of the rules have already been applied in our previous recipes in this chapter. We will now deal with the rest of the recipes.
We must have installed the Firefox browser and the following add-ons to work with this recipe. Make sure these tools are installed and regarding versions, the later the better.