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.
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Level up your website performance optimization
Available with WebPageTest Pro
Bulk Testing Capabilities
Fire off a test for a batch of URLs all at once.
Jump the Queue!
All Pro tests, manual or via the API, are queued up at a high priority over the free tier
Premium Locations
Dive into the anatomy of your webpage with components like DNS, TCP, TLS, and more.
And more
No-Code Experiments, Website Performance Monitoring, API access, Carbon Control, +more!