Testing the speed of your website regularly is a great way to spot problems and improve the user experience (UX).
Here is a list of free website testing tools. There are both simple and advanced tools for testing page speed, search engine optimization, and mobile browser performance. Analyze your or your competitor's website and get actionable recommendations to improve your results.
Free tools to test website speed:
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Analyze the loading speed of your website and find out how you can speed it up. With Pingdom you can find out which items are fast, slow, or simply too big. Find out if your website follows Google PageSpeed Insights performance best practices. The tests are saved so that you can later track your performance over time. All tests are carried out using real web browsers, so the results match the end-user experience.
The basic version is free. The premium version costs $ 14.95 per month.
Pagelocity is a web application for analyzing, optimizing and monitoring websites. The content checker provides insights into keywords, headings, links (internal, external and nofollow) as well as alternative text for images. Optimize your website in a targeted manner by knowing what its composition looks like (how many images, scripts or style files). Get useful information about your markup: Classes / IDs, Tags, Google PageSpeed, and more. Get the Chrome extension to quickly analyze web pages while browsing.
Nibbler is a free website testing tool. Enter the address of any website. Nibbler will give you a 1 to 10 rating report for key traits including accessibility, SEO, social media, and technology.
Nibbler is free, but limited to three modules. The Pro version costs $ 60 per month.
GTmetrix is a tool to easily determine the performance of your website. You will get your website loading speed along with actionable recommendations to resolve bottlenecks. Schedule monitoring and set up alerts. Test from different regions and analyze your performance on mobile devices.
The service is free for up to three URLs. The premium versions start at $ 14.95 per month.
YSlow analyzes web pages and determines why they are slow, based on Yahoo's 34 Rules for High-Performance Websites. YSlow's website analysis is based on the 23 verifiable rules. YSlow searches a website, summarizes the components and statistics, offers optimization suggestions and provides tools for performance analysis.
mobiReady is a free testing tool for developers, designers, and marketers of mobile web applications to assess the mobile readiness of a website against industry best practices and standards. The tests are based on W3C standards as well as the Yahoo guidelines for YSlow and Google PageSpeed. Get analytics and recommendations to see how well your site is performing on mobile devices. Compare your website with that of your competitors.
Varvy is a collection of free tools for testing the SEO, speed, and mobile functionality of a website. Run the SEO tool to see how well a page complies with Google guidelines. Test the optimization of your page speed. Check a website for mobile SEO issues. Each test page also includes a number of help tips and guidelines for optimizing website performance.
Dotcom-Monitor's speed test enables users to test their website in 20 locations worldwide. Once a test is complete, users can analyze the performance reports and a waterfall chart analysis. Users can also choose which browser to test - Chrome, Firefox, Internet Explorer, and mobile browsers including iPhone, iPad, and more.
The trial version is free for 30 days. The major version starts at $ 5.99 per month.
Load Impact simulates web traffic exactly as it would happen in real life. Perform extensive stress tests with up to 1.2 million concurrent users. Generate loads from up to 10 different locations at the same time and even add additional locations on request. Record an HTTP session and have the simulated users perform the same actions during the test. Configure your load tests to run in the middle of the night or once a week.
The free plan offers 10 tests per month. The premium plans start at $ 119 per month.
Google PageSpeed Insights
Google PageSpeed Insights measures the performance of a page for mobile and desktop devices. The tool gets the URL twice, once with a mobile user agent and once with a desktop user agent. The PageSpeed-Score ranges from 0 to 100 points. PageSpeed Insights is continuously improved by Google. The rating will change with new rules or improved analysis.
Originally developed by AOL for internal use, WebPagetest is an open source project that is now mainly developed and supported by Google. Run a free website speed test with different browsers (Internet Explorer and Chrome) in different locations around the world and with real connection speeds. Run simple or advanced tests, including multi-step transactions, video capture, content blocking, and more.
With Uptrends' free website speed test, users can test a website against 35 global checkpoints. Check your website and view the times for resolution, TCP connection, HTTPS handshake, sending, waiting and receiving.
Speed tests are free. Premium service starts at $ 13.35 per month for full-time monitoring.