Free
PageSpeed Insights
Check a page’s performance and investigate opportunities to improve the experience on mobile and desktop.
Speed & performance tools
Measure loading, responsiveness, and visual stability across your pages.
How to choose
Keep field data and lab tests separate. Test representative templates on mobile and desktop, then confirm that a fix improves actual user experience. A single synthetic score is only one observation.
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Freemium
WebPageTest
Investigate loading behavior with configurable performance tests and detailed page waterfalls.
DIYSEOHub is our own tool and appears first in the featured sort. Technical scores measure the tool’s website, not the software. Read our disclosure.