Page load time is the time it takes a web page to load in the browser.

Why Page Load Time Matter: This is because

* Google treats page load time as a factor in the quality score.

* Slow loading landing pages create negative user experience.

Tools to Analyze Web Page Load Time: Listed alphabetically

* CloudNetCare (http://www.cloudnetcare.com/loadtest) at http://www.cloudnetcare.com/en/app/new-scenario?mode=new

* Firebug (https://getfirebug.com)

* Google Page Speed Insight (https://developers.google.com/speed/pagespeed/insights)

* GTmetrix (http://gtmetrix.com/)

* Montis (http://monitis.com) at http://portal.monitis.com/web-load-tester

* Nimsoft (http://www.watchmouse.com/en/checkit.php)

* Pingdom (https://www.pingdom.com) at http://tools.pingdom.com/fpt/

* WebPagetest (http://www.webpagetest.org/compare)

* YSlow (http://developer.yahoo.com/yslow/)

My Own Recommendation

* Google Page Speed Insight (https://developers.google.com/speed/pagespeed/insights)

Need to Read More?: Consult the following which are arranged according to their value

http://support.google.com/adwords/bin/answer.py?hl=en&answer=24...

http://adwords.blogspot.in/2008/03/landing-page-load-time-will-soon...

http://forums.searchenginewatch.com/showthread.php?t=21690

http://www.webmasterworld.com/google_adwords/3591430.htm

http://forums.searchenginewatch.com/showthread.php?t=21658

http://www.seroundtable.com/archives/016485.html

http://www.seroundtable.com/archives/016457.html

http://www.seroundtable.com/archives/016469.html