Opportunities & no-code experiments
Get unlimited access to no-code experiments, which enable you to instantly test the impact of suggested optimizations, without changing your actual site!
Actionable suggestions
It can be overwhelming to figure out how to improve a poorly performing website.
WebPageTest analyzes test results for all users and provides suggestions for enhancing a website's performance. You can directly apply the suggestions to improve your site or see the impact of recommended changes with our comprehensive experimentation tools.
You have the option to run no-code experiments, which save time on testing and provide a clear roadmap for performance improvements, or to conduct advanced experiments for more in-depth analysis and optimization.
Complex optimizations without any code
How much faster would my site load if its HTML was generated on the server instead of on the client? How would my LCP change if I preload the hero image, or use priority hints?
Let WebPageTest Pro visualize that for you.
Custom experiments
Sometimes you want to test the impact of a potential change before you make it. For example, will this analytics script impact our performance metrics?
WebPageTest Pro lets you run custom experiments at the start of a test, or alongside other experiments from the Opportunities page.
Trusted by the world's top brands
Why web performance experts choose WebPageTest
In-depth metrics + Waterfalls
Slice data by location, browser version, and device type to compare Core Web Vitals scores or performance indicators. Identify specific impact areas on the waterfall to quickly diagnose performance issues.
Correlated Insights
Combine WebPageTest metrics with real user insights from RUM for a holistic view of website performance and user experience.
Powerful visualizations
Easily share videos, .gifs, and filmstrips with your team and benefit from out-of-the-box dashboards and AI-powered smartboards to seamlessly collaborate and resolve issues on a unified platform.
Developer-first API & integrations
Scale and 'programmatically run WebPageTest with our easy-to-use API and integrate into your dev workflows with our easy-to-use API with the NPM wrapper for Node JS, Github Actions, VC Code Extension, Slackbot, Grafana and more.
