Core Web Vitals 2026: What Matters and Why SMEs Should Check Them

Google Core Web Vitals are a set of criteria that Google considers important for a website’s user experience. Core Web Vitals consist of three metrics related to speed and user interaction: content size, speed, and page loading.

In short: Core Web Vitals are a subset of factors that are part of Google’s “page experience” evaluation—essentially, the way Google assesses your site’s overall user-friendliness.

You can find your website’s Core Web Vitals data in the “Enhancements” section of your Google Search Console account.

Why are Core Web Vitals important?

Google plans to introduce user experience as an official Google ranking factor.
Page experience will be a combination of aspects that Google considers important for user experience, including:
•          
HTTPS•
Mobile-friendliness• Absence of intrusive
pop-ups• “Safe Browsing” (basically, no malware on the page)

And Core Web Vitals will be a super-important part of this evaluation.
Judging by the announcement and the name, it’s likely that Core Web Vitals will account for the largest share of the page experience evaluation.

Please don’t forget that a good page experience score won’t magically propel you to the #1 spot in Google’s rankings.

In fact, Google was quick to point out that page experience is one of several (about 200) factors they use to rank websites in search.

But that’s no reason to panic just yet.
Google says you have until next year to optimize your website’s Core Web Vitals scores.
But if you want to improve your Core Web Vitals sooner, that’s great.
In this guide, we’ll introduce you to the three Core Web Vitals metrics and show you how to improve each one.

Largest Contentful Paint (LCP)

LCP is the time it takes for a webpage to load from the user’s perspective.

In other words: It’s the time from clicking a link to the content appearing on the screen.

LCP differs from other page speed metrics. Many other page speed metrics (such as TTFB and First Contentful Paint) do not reflect the user’s experience of opening a webpage.

In contrast, LCP focuses on what really matters when it comes to page speed: that the user can see your page and interact with it.

You can check your LCP score using Google PageSpeed Insights (https://developers.google.com/speed/pagespeed/insights/). This is particularly useful for identifying areas for improvement.

The advantage of Google PageSpeed Insights over a tool like webpagetest.org is that you can see your page’s performance under real-world conditions (based on data from the Chrome browser).

Nevertheless, it’s recommended to review the LCP data in GSC.
Why?

Like Google PageSpeed Insights, the data displayed in Search Console comes from the Chrome User Experience Report.

But unlike PageSpeed Insights, you can view the LCP data for your entire website.

Instead of analyzing random pages one by one, you get a list of URLs where you can see whether they’re good or bad… or somewhere in between.

Google also has specific LCP guidelines.

These categorize LCP speed into three categories: Good, Needs Improvement, and Poor.

In short, all your pages should reach LCP within 2.5 seconds.

This can be a real challenge for large websites or pages with many features.

Hard work? Definitely. Is it worth it? Absolutely.

Here are a few tips on what you can do to improve your page’s LCP:

• Remove all unnecessary third-party scripts: A study on page speed showed that every third-party script slows down a page’s load time by 34 ms.
• Choose a more efficient web host: better hosting = faster overall load times (including LCP).
• Implement "lazy loading": Lazy loading ensures that images are only loaded when someone scrolls down your page. This means that LCP can be achieved much faster.
• Remove large page elements: Google PageSpeed Insights shows you if your page contains an element that slows down your page’s LCP.
• Streamline the CSS: Complex CSS can significantly impact LCP times.

First Input Delay (FID)

Next, let’s take a look at Google’s second Core Web Vital: First Input Delay (FID)

At this point, your page has reached FCP.

But the question is: Can users interact with the page?

That’s exactly what FID measures: the time it actually takes a user to interact with your page.

Examples of interactions include:

• Selecting an option from a menu
• Clicking a link
• Entering an email address into a field
• Expanding "accordion text" on mobile devices

FID is important to Google because it takes into account how real users interact with the website.
And like FCP, they have specific criteria for what constitutes an acceptable FID.

Technically speaking, FID measures the time it takes to perform an action on a page.
In that sense, it is a Page Speed Score.

However, it also measures the time it takes for the user to be able to interact with your page.

For pages that consist solely of content (such as blog posts or news articles), FID is irrelevant.

The only real “interaction” is scrolling on the page or zooming in and out.

But for a page intended for logging in, signing up, or simply quick clicking, FID is an important factor.

For example, consider the loading experience for a page like the “Reddit Login Screen”:
On such a login page, the time it takes to load the content is less important.

What matters is how quickly you can type in your login credentials.

Here are a few ways you can improve your page’s FID scores.

• Reduce (or eliminate) JavaScript: As long as the browser is loading JavaScript, it’s impossible for users to interact with a page. Therefore, minimizing or eliminating JavaScript is a key factor for FID.
• Remove all non-essential third-party scripts: Just like with FCP, third-party scripts (such as Google Analytics, heatmaps, etc.) can negatively impact FID.
• Use a browser cache: This ensures that your page’s content loads faster. This allows your user’s browser to process JavaScript loading processes more quickly.

Cumulative Layout Shift (CLS)

Cumulative Layout Shift (CLS) refers to a page’s stability while loading, also known as “visual stability.”

In other words: If elements on your page change during the loading process, you have a high CLS value, which is bad.

The elements on your page should not change during the loading process.

This way, users don’t have to relearn where the links, images, and content are located after the page loads.

Here are some simple steps you can take to minimize CLS.

• Set size attributes for all media (videos, images, GIFs, infographics, etc.): This tells the user’s browser the exact dimensions of how much space this element will take up on the page. As a result, it won’t change this value during the loading process.
• Ensure that advertising elements occupy a fixed position: Otherwise, they may appear unexpectedly during page rendering and push content down, up, or to the side.
• Insert new UI elements at the bottom of the page: This prevents them from pushing down content that the user “expects” to remain in place.

Read more about it

• Basics of UX: Core Web Vitals (and Google’s “Page Experience” metrics in general) aim to quantify the user experience. So the better your overall UX is, the better your page experience metrics will be. Google’s “Basics of UX” guide is an excellent resource.
• Chrome Lighthouse Overview: This helpful tool, built into Google Chrome, breaks down why a page loads quickly—or why it doesn’t.