WebPageTest is a free tool that allows users to test the performance of their websites from different locations around the world, using real browsers at real consumer connection speeds. It provides detailed insights and recommendations for improving website speed and performance.
45000 / day
50000 / day
3.2 page per visit
Domain Rating
Domain Authority
Citation Level
English, etc
Test your website's performance from multiple locations around the globe to understand how geography affects loading times.
Utilizes actual browsers (like Chrome, Firefox) for testing, providing more accurate results than synthetic testing tools.
Simulates various connection speeds, from mobile 3G to high-speed broadband, to see how your site performs under different conditions.
Offers comprehensive metrics including load time, first byte time, and start render time, among others.
Provides a detailed waterfall view of all the resources loaded by the website, helping identify bottlenecks.
Records a video of the page load, allowing you to visually assess the user experience.
Supports custom scripting for advanced testing scenarios, such as logging in or interacting with the page.
Integrates Lighthouse audits for performance, accessibility, progressive web apps, SEO, and more.
Offers API access for automated testing and integration into development workflows.
Allows organizations to set up private instances for internal testing, ensuring data privacy and security.
WebPageTest was originally developed by AOL for internal use and was later open-sourced by Patrick Meenan.
The tool is open-source, allowing developers to contribute to its development or customize it for their needs.
Has a strong community of users and contributors. Support is available through forums and documentation.
Used by major companies and organizations worldwide to optimize their web performance.
Recognized by the web development community for its contribution to web performance optimization.
Security headers report is a very important part of user data protection. Learn more about http headers for webpagetest.org