Page Speed is an open-source Firefox/Firebug Add-on. Webmasters and web developers can use Page Speed to evaluate the performance of their web pages and to get suggestions on how to improve them.
First you have to install Firebug before installing page speed.
Just go to the following link on Firefox and click on add to Firefox .
Once you have installed firebug Just open Firefox and go to the following link and click on Install Page speed.
To profile a page with Page Speed:
- Start Firefox.
- SelectÂ Tools >Â Firebug >Â Open Firebug.
- In the Firebug window, select theÂ Page Speed tab.
- Navigate to the web page you want to analyze. Wait until theÂ Done message appears on the browser status bar and the progress bar disappears. For pages with streaming video, which don’t show theÂ Done message, wait until the video begins to play.
- ClickÂ Analyze Performance. When the page is analyzed, Page Speed displays the list ofÂ web performance best practices and the page’s score on each one, sorted by importance/priority for this page.
- Optionally, do any of the following:
- Expand any of the rules to see specific suggestions for improvement.
- Click any of the rule names to see documentation about each rule.
- ClickÂ Resources to show a detailed list of resources referenced from this page.
- SelectÂ Export > Write JSON File to export the results in JSON format.
- SelectÂ Export > Send Scores to www.showslow.comÂ to send results toÂ Show Slow, an open source web-based tool for collecting performance metrics from Page Speed over time. For information on the data that is sent to Show Slow, see theÂ beacon documentation on the Page Speed open source project page for the “minimal beacon”.