The loading time of a webpage is crucial it can mean the difference between a user staying to enjoy your content or heading to a competing site to find the information they are after.
Google up until today has been using an in house tool called “Page Speed”, similiar to the Yahoo Y-Slow plugin to aid developers.
Today Google has released the tool to the developer community for download and use to optimize the loading time of their own sites.
Quote from the Google blog:
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For example, Page Speed automatically optimizes images for you, giving you a compressed image that you can use immediately on your web site. It also identifies issues such as JavaScript and CSS loaded by your page that wasnโt actually used to display the page, which can help reduce time your users spend waiting for the page to download and display.