The gold standard for web performance testing and optimization

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), SSO, Security, SLO monitoring, and the largest Global Observability Network.

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.

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.