How to Check Website Speed (Core Web Vitals)

1. Open PageSpeed checker. Go to /en/speed.
2. Enter URL and strategy. Pick Mobile or Desktop. Mobile is stricter — start there.
3. Review Core Web Vitals. LCP (< 2.5s — good), CLS (< 0.1), INP (< 200ms). Below — red alerts.
4. Read opportunities. Bottom — specific optimisations: lazy-loading, image compression, CSS/JS minify, reduce unused code.
5. RUM monitoring. For real-user metrics (not lab data), enable RUM tracker on the Pro plan.

Open tool →

To effectively check your website speed online, it’s crucial to understand the Core Web Vitals, which are a set of performance metrics established by Google. These metrics focus on user experience and include:

• Largest Contentful Paint (LCP): Measures loading performance. A good LCP score is 2.5 seconds or faster.
• First Input Delay (FID): Measures interactivity. A good FID score is 100 milliseconds or less.
• Cumulative Layout Shift (CLS): Measures visual stability. A good CLS score is 0.1 or less.

By analyzing these metrics using Enterno.io, you can gain insight into how your website performs under real-world conditions. The platform utilizes Google’s recommended methodologies, ensuring that the data you receive is both accurate and actionable.

It’s important to regularly monitor these metrics, as they directly impact your search engine rankings and overall user satisfaction. A consistent approach to checking these scores can help you identify trends and areas needing improvement.

For a more hands-on approach to checking website speed, you can utilize browser developer tools available in most modern browsers like Chrome, Firefox, and Edge. Here’s a step-by-step guide on how to do this:

1. Open your website in a browser.
2. Right-click on the page and select Inspect or press Ctrl + Shift + I (Windows) or Cmd + Option + I (Mac).
3. Navigate to the Network tab in the developer tools.
4. Reload the page while keeping the Network tab open to capture the loading process.

Once the page loads, you’ll see a waterfall chart displaying the loading time for each resource. Pay attention to the following:

• Waterfall chart: Indicates which resources are taking the longest to load.
• Timing breakdown: Shows how much time is spent on different phases like DNS lookup, Initial Connection, SSL negotiation, and Content Download.

This method allows you to pinpoint specific issues affecting your website's speed and offers insights into what changes you can implement to enhance performance.

When checking your website's speed, it's beneficial to compare results across different online tools to get a comprehensive view of your performance. Here are some popular tools and how they differ:

• Google PageSpeed Insights: Provides detailed insights based on Google’s algorithms, focusing on both mobile and desktop performance.
• GTmetrix: Offers a detailed breakdown of page speed and performance scores, including recommendations for improvement.
• WebPageTest: Allows you to run tests from various locations and browsers, providing a more granular look at loading times and resource usage.
• Pingdom: Offers a user-friendly interface with performance monitoring and uptime tracking features.

To effectively utilize these tools, consider running tests at different times of the day and from various geographic locations to account for network variability. Always compare the Core Web Vitals and look for consistent issues across the tools, as this can help you prioritize fixes. Make sure to document your findings and track your improvements over time.