Website Speed Test - tools.pingdom.com

Pingdom offers cost-effective and reliable server, network and website monitoring. We use a global network of servers to monitor our customers' sites 24/7, all year long. The service includes statistics for uptime and response time, and can send out alerts via SMS, email, and more.

This Website Speed Test to help you analyze the load speed of your websites and learn how to make them faster. It lets you identify what about a web page is fast, slow, too big, what best practices you’re not following, and so on. They have tried to make it useful both to experts and novices alike.
In short, they wanted it to be a easy-to-use tool to help webmasters and web developers everywhere optimize the performance of their websites.

Feature Overview

• Examine all parts of a web page – View file sizes, load times, and other details about every single element of a web page (HTML, JavaScript and CSS files, images, etc.). You can sort and filter this list in different ways to identify performance bottlenecks.
• Performance overview – It automatically put together plenty of performance-related statistics for you based on the test result
• Performance grade and tips – See how your website conforms to performance best practices from Google Page Speed (similar to Yahoo’s Yslow). You can get some great tips on how to speed up your website this way.
• Trace your performance history – We save each test for you so you can review it later and also see how things change over time (with pretty charts!).
• Test from multiple locations – See how fast a website loads in Europe, the United States, etc.
• Share your results – They made it easy for you to perform a test and share it with your friends, work colleagues or web host.

How it works

All tests are done with real web browsers, so the results match the end-user experience exactly. They use a bunch of instances of Google’s Chrome web browser to load websites, record performance data, and so on. Tests are done from dedicated Pingdom servers.