Page Speed Insights & Website Performance Checker
Run our free page speed insights tool to test website loading time, uncover performance bottlenecks, and improve SEO rankings. Test your web page now.
About Page Speed Insights
Doffl's Page Speed Insights tool evaluates your website's loading speed and overall performance directly from your browser. Designed for web developers, SEO professionals, and site owners, it analyzes critical delivery metrics to show you exactly how fast your pages load for visitors.
Running a performance audit requires no software installation or account registration. Simply enter your web address to receive an objective breakdown of load times, asset weights, and technical bottlenecks so you can optimize user experience and organic search visibility.
Key features
- Measure overall page load time and asset sizes
- Evaluate Core Web Vitals and rendering performance
- Audit both mobile and desktop configurations
- Identify render-blocking resources and oversized scripts
- Diagnose time to first byte and server response latency
- Generate actionable recommendations for technical SEO improvements
How to use Page Speed Insights
- Enter the full URL of the web page you want to analyze.
- Select whether to test mobile or desktop performance.
- Click the analyze button to initiate the speed test.
- Review the performance scores and diagnostic breakdown.
- Apply the suggested fixes to reduce page load time.
Who is it for?
- SEO specialists auditing technical site health and search ranking factors
- Frontend developers pinpointing unminified scripts and bulky stylesheets
- E-commerce managers reducing page latency to boost checkout conversion rates
- Publishers optimizing mobile article templates for faster content delivery
Frequently asked questions
Why is page speed important for SEO?
Search engines like Google use page loading speed and Core Web Vitals as direct ranking signals. Faster sites rank higher, experience lower bounce rates, and deliver better user engagement.
What is an acceptable page load time?
Most industry standards recommend a full page load time under three seconds. For optimal user retention and conversions, critical above-the-fold content should render within one to two seconds.
Is this page speed insights tool free to use?
Yes, this tool is completely free to use directly in your browser. You can run audits on any public URL without creating an account or installing extensions.
Why do mobile and desktop speed test scores differ?
Mobile tests simulate cellular network latency and mobile device processor constraints, which are generally slower than desktop hardware and high-speed broadband connections. Testing both ensures a consistent experience across devices.
What are Core Web Vitals?
Core Web Vitals are a set of specific metrics defined by Google that measure real-world user experience, including loading speed (LCP), visual stability (CLS), and page interactivity (INP).