13 Best Website Speed And Performance Testing Tools

Having a fast loading website is not only good for visitors who will tend to stay longer and visit more pages, it is also imperative if you are looking to maximize your google rankings. Google’s search algorithm puts a premium on website speed and performance and you could be seriously impacting your website rankings and therefore traffic if your site slow.

Luckily there are a plethora of free online tools to check your load times, help diagnose any technical issues and recommend solutions. In many cases there are some quick fixes can be done to speed up a website and it is worth mentioning that the aim is not to get a perfect score in any of these performance tests. They are just guides to help you improve your site and implement best practice so just look to implement improvement rather than strive for perfection. If you test some other fast loading site or your competitors you will see that no site will get a perfect score but the best ones will be way above average.

Also, it is also worth remembering your hosting package will have a big impact on your load times so it is also worth reviewing your the specs of your host to see if your setup is suitable for your website and traffic levels. A site optimised for speed may be let down by being on a shared host with hundreds of other sites.

So here are the website speed and performance testing tools we recommend. Most perform very similar tasks so it is worth using just a few and you can not go far wrong with the first 5 on this list.

PageSpeed Insights

pagespeed insights

It’s probably a good idea to start this list with a speed analysis tool from the number one search engine — nay, the number one most visited website in the world! Google Developers have come up with PageSpeed Insights, a free online tool that checks your website content, and gives recommendations on how to speed up your page.

You have two options in using PageSpeed Insights: online through the official Google Developer page, or through a browser extension for Chrome and Firefox.



Naturally, Google’s primary search engine rival www.Yahoo.com won’t just sit down and let the king enjoy the spoils. Yahoo! YSlow is a browser add-on that analyzes pages and recommends tips on how to make them load faster. The good thing about YSlow is that it’s available in most browser formats, as well as in mobile and the command line.



This free online website speed test can run a comprehensive assessment about the performance of your site. Just put your website URL  (or a page link), and it will measure the loading time of all elements on the page. The report will show you which page elements (images, scripts, CSS, HTML, and others) load slowly, so that you can do adjustments to these items.



This powerful yet simple analytical tool monitors your website performance across two of the more popular website monitoring browser add-ons: Google Page Speed and Yahoo! YSlow. GTMertrix is best viewed on Firefox and Google Chrome, but it should also work fine on other browsers.



Equipped with an easily understandable interface, WebPageTest provides a visual representation of your website’s performance. After you enter your URL in the field provided, the site will then display grades for each of the most important aspects of website speed:

Show Slow


As its name suggests, this free online service tells you if your website is slowing down in terms of loading speed. Show Slow combines the speed monitoring results from Yahoo! YSlow, Google PageSpeed Insights, WebPageTest, and dynaTrace AJAX Edition.

Alternatively, you can also install Show Slow on your own server to make the results private. Read more information about installation to your own server here.

Compuware APM AJAX Edition


Dubbing itself as a “free web performance analysis and debugging tool”, Compuware’s speed assessment application is similar to other famous tools in the market. Its focus is more on deeper backend diagnostics, which is great for web developers.

Load Impact


Load Test offers a free diagnostic test to check your site’s loading performance. Signing up for an account will grant you more comprehensive reports. You may also want to check their plans for professional services.



Powerful, open source, totally free. That’s how Pylot wants to position its Web performance and scalability testing tool. The downloadable application runs through your page’s content for HTTP load tests. This tool is more technical than the others, so it’s designed more for web developers and performance engineers.

OctaGame SiteTimer


SiteTimer from OctaGate is as simple as it gets: Enter your site URL, and SiteTimer will show you how long it will take for your pages to load. The interface involves a graphical representation of the loading time, complete with color coding for easier reference.

PageScoring Website Speed Test


Formerly iWebTool, this relaunched version of the online website speed check reveals the domain lookup and connection time, page size, download time and average speed (in MB/s).



Another no-frills speed assessment tool, WebWait tells you how long it takes for your URL to load completely in a predetermined number of runs or attempts.


website optimization

This online service offers comprehensive diagnostics on your site performance by calculating page size and assessing download time per page element. WebSiteOptimization.com will also recommend a few changes for your site, depending on the results of your page speed test.