Top 10 Tools for Page Load Speed Testing
↳ Post created Friday, August 6th 2010 by admin. ⌈2 comments⌋The new Google ranking algorithm factor is page load time.
Speeding up websites is important — not just to site owners, but to all Internet users. Faster sites create happy users and we’ve seen in our internal studies that when a site responds slowly, visitors spend less time there. But faster sites don’t just improve user experience; recent data shows that improving site speed also reduces operating costs. Like us, our users place a lot of value in speed — that’s why we’ve decided to take site speed into account in our search rankings. We use a variety of sources to determine the speed of a site relative to other sites.
There are a lot of ways to test your page load speed, below you will find few tools to help you test your site’s page load time more effectively.
Top 10 Tools for Page Load Speed Testing
1.Page Speed – An open source Firefox/Firebug add-on that evaluates the performance of web pages and gives suggestions for improvement.
2.YSlow – A free tool from Yahoo! that suggests ways to improve website speed.
3.Pingdom Tools – Test the load time of a web page.
4.OctaGate SiteTimer – Free web monitor service that can be used by webmaster or developer to monitor how long it takes for a user or visitor to download one or more web pages from the web site.
5.Webslug – Analyse websites for performance. Compare them against other sites and find out how fast or slow your pages really are.
6.iWebTool Website Speed Test -Find out how fast your website loads. Too slow? Perhaps you need to optimize the page or move to a faster!
7.Webpage Analyzer – Free web page analysis service tests page size, composition, and download speed. Recommends speed improvements based on best practices for usability, HCI, and website optimization for maximum website performance.
8.WebPagetest – Shows a waterfall view of your pages’ load performance plus an optimization checklist.
9.Site-Perf.com – This online tool emulates natural browser behaviour downloading your page with all the images, CSS, JS and other files.
10.Uptrends Page Test Tool – Full HTML load time web page test tool. Analyze the load time of every element on your web page.

Few year back i am searching this tool with more efforts, thanks for sharing
I have always been using WebPagetest tool and Pingdom tool.