Website visitors expect pages to load quickly, respond smoothly, and function properly across all devices. When a website feels slow, unstable, or frustrating to use, users are far more likely to leave before taking action.
This is one of the reasons Google introduced Core Web Vitals.
Core Web Vitals are a set of performance measurements designed to assess real user experience on websites. They focus on how quickly pages load, how responsive they feel, and how visually stable they are while loading.
Although Core Web Vitals are technical measurements, their purpose is simple: improving the experience for users.
Why Google Introduced Core Web Vitals
Google wants to direct users towards websites that provide useful, high-quality experiences.
Over the years, websites have become increasingly complex. Many now include large images, scripts, animations, tracking systems, videos, third-party tools, and interactive content. While these features can be useful, they can also negatively affect performance.
Slow or unstable websites create frustration for users, particularly on mobile devices or slower internet connections.
Core Web Vitals were introduced to encourage businesses to focus more closely on real-world usability and performance.
The Three Main Core Web Vitals
Core Web Vitals currently focus on three key areas.
Largest Contentful Paint (LCP)
LCP measures loading performance.
Specifically, it tracks how long it takes for the main visible content on a page to load. This might include:
- A large image
- A heading
- A content block
- A hero banner
Google generally recommends that LCP should occur within 2.5 seconds of the page starting to load.
If this takes too long, users may perceive the website as slow or unreliable.
Common causes of poor LCP scores include:
- Slow hosting
- Large image files
- Poor server performance
- Excessive scripts
- Unoptimised code
Interaction To Next Paint (INP)
INP measures responsiveness.
It looks at how quickly a website reacts when a user interacts with it, such as:
- Clicking a button
- Opening a menu
- Submitting a form
- Tapping navigation on mobile
A website may appear loaded visually but still feel slow if users click elements and nothing happens immediately.
Poor responsiveness can make websites feel frustrating and unreliable.
Causes of poor INP scores often include:
- Heavy JavaScript
- Poorly optimised plugins
- Excessive third-party tools
- Complex front-end code
Cumulative Layout Shift (CLS)
CLS measures visual stability.
This focuses on whether elements move unexpectedly while the page is loading.
Most users have experienced situations where:
- A button suddenly shifts position
- Text jumps while reading
- Images load late and move content
- Advertisements appear unexpectedly
These layout shifts create poor user experiences and can even cause users to click the wrong elements accidentally.
CLS problems are commonly caused by:
- Images without defined dimensions
- Dynamic content loading late
- Advert placements
- Fonts loading incorrectly
- Unstable page structures
Why Core Web Vitals Matter
Core Web Vitals matter because they directly affect user experience.
Visitors are less likely to engage with websites that:
- Load slowly
- Feel unresponsive
- Jump around while loading
Poor user experience can lead to:
- Higher bounce rates
- Lower engagement
- Reduced enquiries
- Fewer conversions
- Lower trust levels
Even small delays can have measurable impacts on user behaviour.
For businesses generating leads online, website performance can directly influence revenue and enquiry quality.
How Can Businesses Improve Core Web Vitals?
Improving Core Web Vitals often involves both technical and design considerations.
Common improvements include:
- Optimising image sizes
- Using modern image formats
- Improving hosting performance
- Reducing unnecessary plugins
- Minimising JavaScript
- Improving caching
- Deferring non-essential scripts
- Simplifying layouts
- Reducing third-party tracking tools
In some cases, websites may require more significant redevelopment work if the underlying structure is outdated or inefficient.
Core Web Vitals Should Support Real Users
One important thing to remember is that Core Web Vitals are not simply technical scores to chase.
The real goal is improving how the website feels for actual users.
A website that loads quickly, behaves consistently, and responds smoothly creates a better experience for visitors and reflects positively on the business behind it.
How BBI Brandboost Can Help
At BBI Brandboost, we can identify performance bottlenecks, improve Core Web Vitals, optimise mobile usability, and ensure websites are better positioned for both users and search engines.
Whether your website is struggling with slow loading times, poor mobile performance, unstable layouts, or wider technical SEO issues, our team can help create a faster, more effective online experience for your visitors. Contact us now to improve your website’s core web vitals.