Why we built this
Page speed isn't just a developer preference — it's a direct factor in search rankings, conversion rates, and whether visitors stay long enough to read your content. But the mainstream performance testing tools are either overwhelming (a wall of waterfall charts and metrics you'd need a course to interpret) or oversimplified ("your site is slow, upgrade to premium to find out why").
We built Site Speed Check to sit in the middle: real performance measurements against the metrics that actually matter — Core Web Vitals, time to first byte, largest contentful paint, total page weight — with plain-English explanations for each one and concrete, prioritised recommendations for what to fix first. No signup, no credit card, no crawl limits. Just run it and read the report.
Who's behind it
Site Speed Check is built and maintained by JWWD, an Australian web development studio that's been shipping production web software since the early 2000s. We've obsessed over performance the entire time — fast sites are a better experience, full stop.
Get in touch
Got a question, a bug report, or a feature request? Head to our contact page and send us a message — we read every one.