Website Speed Checker — Free Page Speed Test Tool

Free Website Speed Checker

Analyze your Core Web Vitals and page performance instantly

Check Your Website Speed

Website speed directly impacts your search engine rankings, user experience, and conversion rates. Google uses Core Web Vitals as a ranking factor, meaning slow websites lose visibility in search results and drive visitors away. Studies show that a one-second delay in page load time can reduce conversions by up to 7% and increase bounce rates by 32%.

Our free Website Speed Checker uses the same Google PageSpeed Insights API that powers Lighthouse to analyze your site's real-world performance. It measures the six most critical performance metrics: Largest Contentful Paint (LCP), which tracks how fast your main content loads; Interaction to Next Paint (INP), measuring responsiveness; Cumulative Layout Shift (CLS), detecting visual stability issues; First Contentful Paint (FCP), showing initial render time; Time to First Byte (TTFB), evaluating server response speed; and Speed Index, gauging how quickly content is visually populated.

Enter your full URL below to get a detailed breakdown of both mobile and desktop performance, along with actionable recommendations to improve your scores. Whether you are running an e-commerce store, a blog, or a corporate site, understanding these metrics is the first step toward a faster, higher-ranking website.

Analyzing mobile performance...

Performance Scores

0
/ 100
-

Mobile

-

Desktop

-

Core Web Vitals

Recommendations

Frequently Asked Questions

What is a good website speed score?▼
A PageSpeed score of 90 to 100 is considered good, meaning your site loads quickly and provides an excellent user experience. Scores between 50 and 89 indicate room for improvement, while anything below 50 signals serious performance issues that are likely hurting your search rankings and driving users away. Most well-optimized websites achieve desktop scores above 90, though mobile scores tend to be lower due to network and device constraints. Focus on getting your mobile score above 70 as a realistic first target.
How does website speed affect SEO rankings?▼
Google confirmed that page speed is a ranking factor for both mobile and desktop searches. Since 2021, Core Web Vitals (LCP, INP, and CLS) are part of Google's page experience signals used in ranking algorithms. Faster websites tend to have lower bounce rates and higher engagement, which are indirect ranking signals. Slow pages also get crawled less efficiently by Googlebot, which can limit how many of your pages get indexed. Improving your speed score can lead to measurable gains in organic traffic.
What are Core Web Vitals and why do they matter?▼
Core Web Vitals are three specific metrics Google uses to evaluate user experience: Largest Contentful Paint (LCP) measures loading performance and should be under 2.5 seconds; Interaction to Next Paint (INP) measures responsiveness and should be under 200 milliseconds; and Cumulative Layout Shift (CLS) measures visual stability and should be under 0.1. These metrics reflect real-world user experience and are measured from actual Chrome user data. Passing all three Core Web Vitals gives your site a ranking boost in Google search results.
Why is my mobile score lower than desktop?▼
Mobile scores are almost always lower than desktop scores because the test simulates a mid-tier mobile device on a slower 4G network connection. This throttling reflects real-world conditions where most mobile users browse on less powerful devices with variable network speeds. Desktop tests assume a wired connection and faster hardware. Since Google uses mobile-first indexing, your mobile score is the one that matters most for SEO. Focus optimization efforts on reducing JavaScript execution time, compressing images, and minimizing render-blocking resources.
How can I improve my website speed score?▼
The most impactful improvements include: compressing and serving images in modern formats like WebP or AVIF; enabling browser caching and GZIP or Brotli compression on your server; minimizing and deferring JavaScript and CSS files; using a Content Delivery Network (CDN) to serve assets from servers closer to your users; reducing server response time (TTFB) by upgrading hosting or implementing server-side caching; lazy-loading images and videos below the fold; and eliminating render-blocking resources. For WordPress or Shopify sites, removing unused plugins and apps can also make a significant difference.