The gold standard in web performance optimization

Run free tests to instantly see how your website performs and discover ways to enhance it with just one click.

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Why WebPageTest?

WebPageTest is the gold standard tool for enhancing website speed, user experience, conversion rates, and SEO rankings via Core Web Vitals. It offers deep diagnostics and actionable insights for measuring and optimizing performance across all major browsers, device types, and network conditions.

Originally created and open-sourced by Patrick Meenan in 2008, WebPageTest was acquired by Catchpoint in 2020 and incorporated into Catchpoint’s industry-leading Internet Performance Monitoring (IPM) Platform. This update has strengthened WebPageTest, making it a part of Catchpoint’s comprehensive suite of AI-powered enterprise solutions, including Real User Monitoring (RUM), Session Replay, SSO, Security, SLO monitoring powered by 3000+ intelligent agents worldwide.

While Catchpoint continues to grow stronger every day, its mission remains unchanged: empowering you to deliver the best possible experiences to your users, no matter where they are in the world.

WebPageTest ❤️ Open Source. Its code remains freely accessible under the Polyform Shield license, continuing its legacy of openness and community-driven innovation.

WebPageTest on GitHub

Maintained by

trusted by the world’s top brands

WebPerf Monitoring at Your Service!

Explore WebPagetest Pro and Enterprise plans to unlock all the features that our users love. Gain access to developer-first API, Ops and Experiments, Real User Monitoring, AI-powered Smartboards, and out-of-the-box dashboards that enable proactive monitoring. And that's just the beginning—our pre-built solutions are designed to ensure your website’s resilience and help you catch issues before they impact your site and revenue.

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Quick Start Guide

Access our Quick Start Guide to learn everything you need to begin using WebPageTest.

Blog

Follow our blog for expert tips, tutorials, and updates to achieve Internet Resilience and deliver a consistently flawless digital experience for your users.

Real Experience

Test your user’s real experience with global locations, modern devices, and the latest browser versions.

Video Capture

Correlate your user’s visual experience to the technical measurements of your site.

In-Depth Metrics

Dive into the anatomy of your webpage with components like DNS, TCP, TLS, and more.

WebPageTest has long been the most advanced tool in any performance engineer’s toolbox. This closer integration with the broader Catchpoint suite gives us new and exciting capabilities to identify where and why users experience friction in their journey”

Rich Howard

CEO, Optimal

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