Test your website speed
GTmetrix tells you how your website performs, why it's slow, and how to optimize it.
We're relied on by the best, with 1,308,938,328 pages analyzed so far.
Get Started with GTmetrix for FREE
Test your page in different locations, monitor and set up Alerts, configure Analysis Options and more with a free GTmetrix account.
We'll show you where your page is slow, what's causing it, and how to fix it
GTmetrix breaks down your page performance in an easy to read, summarized report.
Get a detailed assessment of page performance with:
- Lighthouse metrics and audits
- Web Vitals (LCP, TBT, CLS)
- Real User Metrics (CrUX)
- Various Analysis Options
- Waterfall, Video and Report History
- Speed Visualization (Filmstrip)
Get Real User Metrics with CrUX Data
Track Core Web Vitals from actual visitors coming to your website with CrUX data.
Monitor trends as far back as 6 months to identify patterns, address
issues, and continuously optimize your website.
Track your performance over time
We'll test your page on a schedule and keep track of how it's doing.
Track historical trends and be aware of performance dips or spikes on an hourly, daily, weekly, or monthly basis.
Visualize alerts triggered for your pages directly on the graphs, including notifications for failed reports.
Learn why monitoring is critical
Get notified when your page is slow
Set up an alert and get notified when your page underperforms.
We'll send you an alert linked to a full report so you can know what
exactly happened, including if your page fails to generate a report.
Latest News and Guides
Upcoming GTmetrix Test Server Changes
We're making some important changes to our global test servers.
Updated to Lighthouse 12.3, New CLS Audit Details, and Scoring Changes
Moving from Lighthouse 11.0.0 to 12.3.0 saw some relevant changes to CLS scoring methodology as well as various audits.
See how your page loads on different devices
Test your page on over 40 different Simulated Device options.
Analyze your performance with iPhones, iPads, Samsung Galaxy/Note, Google Nexus/Pixel phones, and other popular devices.
How does your page perform around the world?
See how your page performs in 22 different global test locations and make sure it loads fast for all your visitors worldwide.
Premium Test Locations only available with GTmetrix PRO.
See all our global test locations