GLOSSARY TERM
What is WebPageTest?
Definition
An open-source performance testing tool that runs tests from real browsers in real locations, with detailed waterfall charts and filmstrips of the load process.
Why it Matters for AI Search
WebPageTest is the closest most people will get to seeing exactly how a real visitor experiences a page load. The waterfall view diagnoses render-blocking issues that summary metrics hide.
Related Terms
LighthouseGTmetrixPageSpeed Insights (PSI)CrUX (Chrome User Experience Report)Google Search Console (GSC)Twitter Card
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