Analyze your website's performance with Google PageSpeed Insights. Get Core Web Vitals scores, performance metrics, and optimization recommendations.
Get comprehensive performance analysis powered by Google PageSpeed Insights
This may take up to 30 seconds
Website speed isn't just a technical metric—it directly impacts your bottom line. Studies consistently show that faster websites have higher conversion rates, better user engagement, and improved search engine rankings. In an era where users expect instant gratification, every second of load time counts.
of mobile users abandon sites that take longer than 3 seconds to load
Source: Googledecrease in conversions for every 1 second delay in page load time
Source: Akamaihigher conversion rate for sites loading in 2.4s vs 4.2s
Source: Portentannual revenue lost by retailers due to slow-loading websites
Source: RadwareCore Web Vitals are a set of specific metrics that Google considers essential for delivering a great user experience. Since June 2021, these metrics are official Google ranking factors. Understanding and optimizing for them is crucial for both SEO and user satisfaction.
What it measures: Loading performance—how long it takes for the largest content element (image, video, or text block) to become visible.
| Good | ≤ 2.5 seconds |
| Needs Improvement | 2.5 - 4.0 seconds |
| Poor | > 4.0 seconds |
Common causes of poor LCP:
What it measures: Responsiveness—the latency of all user interactions (clicks, taps, keyboard inputs) throughout the page lifecycle.
| Good | ≤ 200 milliseconds |
| Needs Improvement | 200 - 500 milliseconds |
| Poor | > 500 milliseconds |
Common causes of poor INP:
What it measures: Visual stability—how much the page layout shifts unexpectedly during loading.
| Good | ≤ 0.1 |
| Needs Improvement | 0.1 - 0.25 |
| Poor | > 0.25 |
Common causes of poor CLS:
| Metric | What It Measures | Good Score | Why It Matters |
|---|---|---|---|
| First Contentful Paint (FCP) | Time from page load to when any content is rendered | ≤ 1.8 seconds | User perceives the page is loading |
| Time to First Byte (TTFB) | Time from request to first byte of response from server | ≤ 800 milliseconds | Indicates server/hosting performance |
| Speed Index | How quickly content is visually displayed during load | ≤ 3.4 seconds | Overall perception of load speed |
| Time to Interactive (TTI) | Time until page is fully interactive and responds to input | ≤ 3.8 seconds | Users can start using the page |
| Total Blocking Time (TBT) | Total time main thread was blocked, preventing input response | ≤ 200 milliseconds | Correlates with interactivity issues |
Images often account for 50%+ of a page's total weight. Optimizing them can dramatically improve load times.
Clean, efficient code loads faster and executes more quickly in the browser.
Your server infrastructure sets the foundation for site speed. No amount of front-end optimization can fix a slow server.
Proper caching reduces server load and speeds up repeat visits dramatically.
Mobile and desktop performance can vary significantly due to differences in network conditions, processing power, and screen sizes. Google uses mobile-first indexing, making mobile performance especially important.
In 2021, Google officially made Core Web Vitals a ranking factor. Here's what this means for your SEO:
Sites meeting Core Web Vitals thresholds may receive a ranking boost, especially in competitive niches.
Google primarily uses mobile performance metrics for ranking all search results.
Fast sites have lower bounce rates and higher engagement, sending positive signals to Google.
The PageSpeed Insights performance score (0-100) is a weighted average of multiple metrics. Here's how to interpret your score:
| Score Range | Rating | What It Means |
|---|---|---|
| 90-100 | Good | Your page is fast and well-optimized. Focus on maintaining performance and monitoring for regressions. |
| 50-89 | Needs Improvement | There's room for optimization. Review the opportunities and diagnostics sections for specific recommendations. |
| 0-49 | Poor | Significant performance issues exist. Prioritize the highest-impact optimizations immediately. |
Note: Performance scores can vary between tests due to network conditions, server load, and other factors. Run multiple tests and focus on trends rather than single scores.
See how other websites are performing
Use our full suite of tools to analyze and optimize your website: