speedRuler is a web performance testing plugin for Chrome. It utilizes the Performance API of the browser to print out performance information of the current webpage in the console. With speedRuler, users can easily assess the performance of their websites and identify areas for improvement.

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speedRuler is a valuable tool for web developers and anyone interested in optimizing website performance. Its ease of use and availability on the Chrome platform make it a convenient choice for testing and improving web page speed.