Website Speed Test
Test any website and get a beautiful, easy-to-read performance report with PageSpeed scores, Core Web Vitals, diagnostics, optimization opportunities, and page weight insights.
Clear performance results in one place.
See the view that often matters most.
Find the fixes most likely to improve speed.
What this website speed test shows
This website speed test gives you more than a single score. It shows how a page performs on mobile and desktop, highlights Core Web Vitals, and surfaces the biggest opportunities to improve loading speed.
That makes it useful for marketers, developers, founders, publishers, ecommerce teams, and anyone who wants to understand why a page feels fast or slow.
Why website speed matters
Faster pages usually create a better user experience, reduce friction, and make it easier for visitors to stay engaged.
Why mobile and desktop both matter
Mobile scores are often lower because phones have less processing power and slower network conditions.
Desktop results are still valuable, especially when comparing how much a page depends on device strength and connection quality.
How to read the breakdown
- Performance score: overall Lighthouse speed score.
- Core metrics: key loading and stability measurements.
- Opportunities: likely fixes that could improve speed most.
- Diagnostics: useful technical context behind the result.
- Page weight: resource requests and bytes.
Why website speed matters beyond SEO
Speed affects far more than search visibility. It changes how quickly a visitor can trust a page, interact with a form, read content, or finish a purchase.
Performance work is often one of the simplest ways to improve user experience and reduce friction.
What usually slows a website down?
The most common causes are oversized images, too much JavaScript, slow third-party tags, weak caching, and long server response times.
This is why a speed report is most useful when it points to causes, not just scores.
Frequently asked questions
It checks mobile and desktop performance, Core Web Vitals, Lighthouse category scores, diagnostics, and optimization opportunities.
A site can look good on one score and still feel heavy because of layout shifts, main-thread blocking, or large third-party scripts.
Usually the best place to start is the opportunities section, because it highlights changes most likely to save load time.