How to Measure Core Web Vitals for Your Website

Many brands face issues like slow-loading pages, delayed interactions, and unstable layouts. These problems reduce user trust. Visitors often leave if a page feels slow or keeps shifting while loading.

These performance issues also affect search rankings, especially now that Core Web Vitals are part of Google’s Page Experience signals. For businesses planning website migration, localization, or performance updates, measuring these metrics early helps avoid rework and ensures a smoother digital experience.

What Core Web Vitals Really Measure

Core Web Vitals are a set of absolute performance metrics introduced by Google. They measure how smoothly a website loads, how stable the layout is, and how fast it responds to user actions.

They focus on three key areas:

Largest Contentful Paint (LCP)

Shows how quickly the main content appears. A good LCP score is less than or equal to 2.5 seconds.

Cumulative Layout Shift (CLS)

Checks if elements jump or shift while the page loads. This reflects visual stability. A good CLS score is 0.1 or lower.

Interaction to Next Paint (INP)

Measures how fast the website responds to clicks, taps, or typing. A good INP score is under 200 ms.

Together, these metrics show the overall user experience and affect both rankings and page performance.

How to Measure Website Performance Using Core Web Vitals

Several tools help you check these metrics easily. Digitup also provides a free and reliable Core Web Vitals Checker.

A few other useful options are listed below:

PageSpeed Insights

Shows real-user data and lab data for LCP, CLS, and INP. Great for quick checks on mobile and desktop. Link: https://pagespeed.web.dev/

Search Console : Core Web Vitals Report

Shows performance issues across all indexed pages. Best for monitoring long-term website health after design or technical updates.

Lighthouse or Chrome DevTools

Helps debug image issues, JavaScript problems, and layout shifts. Useful during migrations, redesigns, or when adding new components.

Third-Party Monitoring Tools

Tools like WebPageTest and GTmetrix provide continuous tracking. Best for websites with regular releases or heavy content.

Why Measuring Core Web Vitals Matters

Good Core Web Vitals improve:

• Search visibility

• Mobile performance

• User trust

• Conversion rates

• Overall engagement

For companies working on migration, redesign, localization, or performance upgrades, tracking these metrics ensures a smooth experience at every stage.

How to Improve Your Core Web Vitals Score

Improve LCP

To improve LCP, compress images so they load faster without losing quality. Using a CDN speeds up delivery by serving files from servers closer to the user. Also, reduce render-blocking scripts so the main content loads without delay.

Reduce CLS

To reduce CLS, make sure all images have fixed width and height values. This helps the browser reserve the right space. Also, keep fixed space for ads, banners, and other dynamic items to avoid sudden jumps. Avoid adding new elements above existing content during load.

Improve INP

To improve INP, minify or split large JavaScript files so the browser can process them faster. Remove unused third-party scripts to reduce load. Finally, optimize event handling so clicks, taps, and typing respond quickly.

If you are planning a migration or performance update, fixing these issues early helps avoid rework later.

Conclusion

Measuring Core Web Vitals is one of the easiest ways to understand your website’s performance and improve your Google Page Experience score. Using a reliable Core Web Vitals checker helps you find issues early, especially during migration, redesign, or localization work.

By tracking LCP, CLS, and INP regularly, you ensure your website stays fast, stable, and user-friendly; giving your brand a strong advantage.