Core Web Vitals Optimization Services

Core Web Vitals Optimization Services

Sure getting the "Core Web Vitals Assessment: Passed" result is impossible for your website? The Onilab team is ready to prove otherwise: we'll fix your LCP, INP, and CLS, as well as other page experience and performance metrics. Once the mission is completed, you'll start to see:

  1. Boosted Google rankings
  2. Faster page load time
  3. Better user experience
  4. Higher conversion rates

What Are Website Core Web Vitals Metrics?

Good website user experience is the lifeblood of any successful company, especially in eCommerce or other online businesses. In 2021, a huge Google algorithm update focused exactly on user-centric page experience metrics. 

Google introduced three new ranking factors called Core Web Vitals: Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS). In 2024, FID was replaced by a new Core Web Vitals metric: Interaction to Next Paint (INP).

Core Web Vitals scores point to how a website (both mobile and desktop versions) is experienced by actual users. Each CWV metric measures its aspect of the UX:

  • Largest Contentful Paint (LCP) is about the loading performance. It evaluates how quickly the largest block (text, image) appears on a web page after a user opens it for the first time.
  • Interaction to Next Paint (INP) is about responsiveness. It assesses the latency of major user-page interactions as long as one stays on the page.
  • Cumulative Layout Shift (CLS) is about visual stability. It measures sudden layout shifts happening as a user interacts with the page.
Read more

Core Web Vitals Optimization Benefits

Anyway, if you want your business to thrive, skipping Core Web Vitals optimization is off the table. There are at least two reasons: CWVs influence search engine rankings and reflect the user experience of real prospects and customers. Let's see what an excellent CWV score does to your sales funnel and core KPIs.

  • Higher Search Engine Rankings

    The better your site's Core Web Vitals score is, the more likely it'll appear higher in SERPs. Few of us go down the rabbit hole on Google even after it implemented infinite scroll. So, climbing as high as possible and overtaking competitors in search is any business's priority.

  • More Organic Traffic

    Sites appearing higher in search results naturally get more visits, and organic traffic is always precious since it doesn't cost you extra money. More visitors = more chances to obtain new customers and orders.

  • Faster Loading Times

    We can't pass the Google Core Web Vitals assessment without addressing performance issues. As a result, the website's loading speed grows, which is crucial for users. Particularly for those browsing the site from a smartphone since we tend to be even more impatient in this case.

  • Better KPIs

    When performance, responsiveness, and visual stability issues are eradicated on web pages, some important metrics inevitably improve. The bounce rate reduces, the session duration gets longer, the user engagement rate grows, etc.

  • Pleasant User Experience

    Poor CLS, INP, or LCP score (yes, even just one parameter) makes interactions with website pages frustrating for users, leading to abrupt session endings. Conversely, if you keep tabs on CWVs, you level up the overall UX.

  • Growing Conversion Rate

    All of the above results in positive changes in the centerpiece metric: the conversion rate. Over time, you'll see significantly more conversions, be it placed orders, subscriptions, downloads, or shared contacts.

  • Increasing Customer Loyalty

    Good customer experience depends on many more factors apart from the UX, but it's a high-impact one. Already knowing the brand is nice to deal with, people tend to come back. Thus, tackling poor CWVs eventually gives a boost to customer satisfaction and retention rates as well as Customer Lifetime Value.

Anyway, if you want your business to thrive, skipping Core Web Vitals optimization is off the table. There are at least two reasons: CWVs influence search engine rankings and reflect the user experience of real prospects and customers. Let's see what an excellent CWV score does to your sales funnel and core KPIs.

Higher Search Engine Rankings

The better your site's Core Web Vitals score is, the more likely it'll appear higher in SERPs. Few of us go down the rabbit hole on Google even after it implemented infinite scroll. So, climbing as high as possible and overtaking competitors in search is any business's priority.

More Organic Traffic

Sites appearing higher in search results naturally get more visits, and organic traffic is always precious since it doesn't cost you extra money. More visitors = more chances to obtain new customers and orders.

Faster Loading Times

We can't pass the Google Core Web Vitals assessment without addressing performance issues. As a result, the website's loading speed grows, which is crucial for users. Particularly for those browsing the site from a smartphone since we tend to be even more impatient in this case.

Better KPIs

When performance, responsiveness, and visual stability issues are eradicated on web pages, some important metrics inevitably improve. The bounce rate reduces, the session duration gets longer, the user engagement rate grows, etc.

Pleasant User Experience

Poor CLS, INP, or LCP score (yes, even just one parameter) makes interactions with website pages frustrating for users, leading to abrupt session endings. Conversely, if you keep tabs on CWVs, you level up the overall UX.

Growing Conversion Rate

All of the above results in positive changes in the centerpiece metric: the conversion rate. Over time, you'll see significantly more conversions, be it placed orders, subscriptions, downloads, or shared contacts.

Increasing Customer Loyalty

Good customer experience depends on many more factors apart from the UX, but it's a high-impact one. Already knowing the brand is nice to deal with, people tend to come back. Thus, tackling poor CWVs eventually gives a boost to customer satisfaction and retention rates as well as Customer Lifetime Value.

Core Web Vitals: Services by Onilab

For more than a decade, we've been helping clients all over the globe bring their websites to perfection performance-wise. Over the years, we've developed a great deal of expertise in optimizing online stores, which are the most high-load sites. Whether you need to fix the Core Web Vitals score for an eCommerce site, a landing page, or any other kind of website, drop us a line.

  • Core Web Vitals Audit
    We'll test your website's Core Web Vitals and closely examine both field (Google PageSpeed Insights scores, Google Search Console reports) and lab data (Google Lighthouse, Chrome DevTools). To obtain a more holistic picture, we'll gather Real User Monitoring (RUM) data as well. Then, Onilab's developers will search for concrete issues harming your Core Web Vitals score and list all the needed optimizations and recommendations.
  • Core Web Vitals Optimization
    Our Core Web Vitals Optimization service includes an audit together with actual fixes: optimizing JavaScript, CSS, images, and fonts, reducing TTFB, eliminating layout shifts, and so on. As a result, you'll enter a Green zone not only in a controlled environment but also in the field and see improvements in other performance metrics. But, most importantly, you'll see how browsing your site from any device becomes smoother and faster.
  • RUM Setup
    Keeping track of real-world Core Web Vitals scores isn't a straightforward task, even in itself. The thing is, reports from PageSpeed Insights or other tools aren't that precise and sufficient. If a business entity heavily relies on its online presence, then setting up Real User Monitoring and analyzing RUM data is vital. We'll create a special Core Web Vitals Dashboard to collect CWV data from all user interactions with each web page.
  • Core Web Vitals Consultancy
    Let's say you need to understand why your previous optimization efforts failed, devise a new strategy, carry out a code review, or just make sense of various tools and methods of gathering CWV data. Our developers and search engine optimization specialists are here to address any CWV and performance-related questions.

For more than a decade, we've been helping clients all over the globe bring their websites to perfection performance-wise. Over the years, we've developed a great deal of expertise in optimizing online stores, which are the most high-load sites. Whether you need to fix the Core Web Vitals score for an eCommerce site, a landing page, or any other kind of website, drop us a line.

Core Web Vitals Audit

We'll test your website's Core Web Vitals and closely examine both field (Google PageSpeed Insights scores, Google Search Console reports) and lab data (Google Lighthouse, Chrome DevTools). To obtain a more holistic picture, we'll gather Real User Monitoring (RUM) data as well. Then, Onilab's developers will search for concrete issues harming your Core Web Vitals score and list all the needed optimizations and recommendations.

Core Web Vitals Optimization

Our Core Web Vitals Optimization service includes an audit together with actual fixes: optimizing JavaScript, CSS, images, and fonts, reducing TTFB, eliminating layout shifts, and so on. As a result, you'll enter a Green zone not only in a controlled environment but also in the field and see improvements in other performance metrics. But, most importantly, you'll see how browsing your site from any device becomes smoother and faster.

RUM Setup

Keeping track of real-world Core Web Vitals scores isn't a straightforward task, even in itself. The thing is, reports from PageSpeed Insights or other tools aren't that precise and sufficient. If a business entity heavily relies on its online presence, then setting up Real User Monitoring and analyzing RUM data is vital. We'll create a special Core Web Vitals Dashboard to collect CWV data from all user interactions with each web page.

Core Web Vitals Consultancy

Let's say you need to understand why your previous optimization efforts failed, devise a new strategy, carry out a code review, or just make sense of various tools and methods of gathering CWV data. Our developers and search engine optimization specialists are here to address any CWV and performance-related questions.

Impacting All Aspects of Website Performance

Core Web Vitals are objective measures of website performance and the UX it delivers. Red and orange Core Web Vitals scores signal poor user experiences. They're also handy indicators of non-optimal code, content, and other aspects.

Largest Contentful Paint

 Largest Contentful Paint

Poor LCP may be caused by:

  • Slow Time to First Byte (TTFB)
  • Render-blocking JavaScript and CSS
  • Client-side rendering (CSR)
     

Interaction to Next Point

Interaction to Next Point

Poor INP may be caused by:

  • Excessive events on the web page
  • Cumbersome event-processing logic
  • Render-blocking operations or scripts

Cumulative Layout Shift

Cumulative Layout Shift

Poor CLS may be caused by:

  • Dynamically embedded content
  • Unoptimized media files
  • FOIT/FOUT-prone web fonts

Make Your Google Core Web Vitals Green

Make Your Google Core Web Vitals Green

Fixing all poor URLs and passing the Core Web Vitals Assessment can be challenging, especially on eCommerce or other complex multipage sites. But it's definitely possible. See what we've achieved after optimizing a popular online store.

Read more

Core Web Vitals Optimization Service: Our Approach

If you turn to Onilab for Core Web Vitals optimization services, you can be sure the whole process is as streamlined and transparent as possible.

  1. Site Audit

    First and foremost, we assess CWVs, measure other web vitals, and identify poor URLs. Then, we study the website's core performance and page experience problems: look into a server configuration, conduct a code review, check media files, extensions, caching strategy, and so forth.

  2. Optimization Strategy

    Typically, we find loads of issues hurting a site's Largest Contentful Paint (LCP), Interaction to Next Point (INP), First Input Delay (FID), Cumulative Layout Shift (CLS), and other metrics. Some of the optimizations are high-priority, while others can be deferred for the time being. Depending on the site owners' and teams' decisions, we plan the main part, which is optimization itself.

  3. CWV Optimization

    Our software engineers make all the agreed optimizations and customizations. The results: the code is clean, visual elements don't hinder performance, the site's loading time is shrunk, and Core Web Vitals go green.

  4. Core Web Vitals Maintenance

    We can continue our cooperation by introducing the RUM solution, periodically monitoring and optimizing Core Web Vitals to make your website load quickly and provide seamless UX each and every time users access it.

See all steps

Why Fix Google Core Web Vitals Metrics with Onilab?

Having a decade of experience in web optimization under our belt, we're sure it's possible to bring any site to perfection in terms of page speed and web vitals. We're happy to help our clients gain new customers and thrive.

Say NO to:

  • Inexperienced coders;
  • Ineffective solutions;
  • Unrealistic promises;
  • Missed deadlines.

Say YES to:

  • Seasoned web developers;
  • Business-focused decisions;
  • Results living up to expectations;
  • On-time releases.

Meet our pros tomorrow and get the highest CWV scores within weeks.

Testimonials

Ray Storey
Ray Storey

Vice President, Webster,
USA

Ray Storey

The team was very responsive and essentially was an extended part of the onshore team.

Project:Webster - Luxury Fashion Retailer

detailed review:

The team was very responsive and essentially was an extended part of the onshore team. Delivery was on time and with high quality.

The team was very responsive and essentially was an extended part of the on... Read more

How we improved the store:

Increasing revenueRevenueX5
Increasing site stabilitySite stability+100%
Susan Cooper
Susan Cooper

Owner, Bright Star Kids,
Australia

Susan Cooper

It's been a really good experience from start to finish.

Project:Bright Star Kids - Online store for kids

detailed review:

The Onilab team has incredible programming skills, and they’re such hard workers. Their work has been completed with outstanding quality. They have done many releases, and there have been very minimal bugs since they started working on our project.

The Onilab team has incredible programming skills, and they’re such hard wo... Read more

How we improved the store:

Increasing total salesTotal sales+40%
Increasing the add-to-cart rateAdd to cart rate+31%
Paul Berry
Paul Berry

Head of Technology, Public Desire,
United Kingdom

Paul Berry

Trusted by some of the world’s best team

Project:Public Desire - Women's Footwear Business

detailed review:

The quality of the code and the speed at which they can produce it is impressive. There were times we needed to get something into production the following day, and they happily worked through the night to get it done.

The quality of the code and the speed at which they can produce it is impre... Read more

How we improved the store:

Increasing total salesTotal sales+8%
Increasing the add-to-cart rateAdd to cart rate+12%
Raphael Seroussi
Raphael Seroussi

CEO, Dovema,
France

Raphael Seroussi

I found the agency takes its work seriously, gives honest pricing, and delivers flawless code.

Project:GSM55 - Smartphone Accessory Vendor

detailed review:

I’ve overseen the entire project with Onilab and the collaboration was highly successful. They demonstrated professionalism and executed their functions quickly.

I’ve overseen the entire project with Onilab and the collaboration was high... Read more

How we improved the store:

Increasing the number of visitorsVisitors+34%
Increasing the number of purchasesPurchases+9%
Vadim Pautov
Vadim Pautov

CEO, SohoMod,
USA

Vadim Pautov

I have no complaints; we received the highest level of service.

Project:SohoMod - Online furniture and home design store

detailed review:

Onilab handled project management flawlessly. They excelled in quick communication and clearly explaining project updates in layman's terms.

Onilab handled project management flawlessly. They excelled in quick commun... Read more

How we improved the store:

Increasing conversion rateConversions+40%
Allison Dorst
Allison Dorst

Founder and CEO, PG-active,
USA

Allison Dorst

Onilab helps us think through decisions with the future in mind… There's much more of a team feeling.

Project:PG-active - Fashion eCommerce site

detailed review:

I really enjoy the “pushback” that the Onilab team gives me because it makes me think. Onilab helps us think through decisions with the future in mind… There's much more of a team feeling.

I really enjoy the “pushback” that the Onilab team gives me because it make... Read more

How we improved the store:

Increasing conversion rateConversion rateX6
Andy Rayner
Andy Rayner

CTO, Eos Leisure Limited,
United Kingdom

Andy Rayner

It was a sad day when we didn't need the developer full time any longer as he had become part of the team.

Project:Eos Leisure Limited - Vaping business

detailed review:

It was a seamless partnership aided by easy communication and the developer's skillset. The developer was easy to work with, as he required minimal supervision and quickly grasped stakeholders' goals.

It was a seamless partnership aided by easy communication and the developer... Read more

How we improved the store:

Successful migration to Magento 2Successful migration to Magento 2
Dickie P.
Dickie P.

CEO, E-commerce Company,
United Kingdom

Dickie P.

I've worked with a lot of agencies and Onilab is the first team that does what they say they can do.

Project:Homegrown Co.

detailed review:

I’ve worked with a lot of agencies and Onilab is the first team that does what they say they can do. They delivered when they said they would and what they said they would.

I’ve worked with a lot of agencies and Onilab is the first team that does w... Read more

Gene Stark
Gene Stark

Marketing and Communications Manager, SRC Health,
Australia

Gene Stark

Onilab was perfect for what we needed, and I would recommend them to anyone working with a Magento platform.

Project:SRC Health - Clothing retailer

detailed review:

Onilab has a great attitude and work ethic. They challenged our ideas and made them better instead of blindly agreeing to our requests. Onilab’s ability to look beyond the brief and ask the right questions made the most significant difference.

Onilab has a great attitude and work ethic. They challenged our ideas and m... Read more

Joe Calvin-Thomas
Joe Calvin-Thomas

Director, Promotional Product Retailer,
United Kingdom

Joe Calvin-Thomas

They allowed me to organize the development how I wanted

Project:Just Keyrings - Promotional Product Retailer

detailed review:

I’ve overseen the entire project with Onilab and the collaboration was highly successful. They demonstrated professionalism and executed their functions quickly.

I’ve overseen the entire project with Onilab and the collaboration was high... Read more

Related Case Studies

Take a look at some website optimization projects we've finished recently.

View allView our portfolio
View more
Magento
React JS
PWA
Denmark

Achievements:

  • Convertions on mobile:+50%
  • Add-to-cart rate:+30%
  • Bounce rate on mobile:-20%

Industry:

Tableware

Bodum is an online store with a wide range of high-quality coffee makers, tableware, and kitchen accessories
View more
Magento
PWA
Finland

Achievements:

  • Page load time-30%
  • User sessions with product views+25%
  • Cart abandonment rate-40%

Industry:

Travel

Timetravels is a tour operator specializing in group travel to Scandinavian and Baltic states
View more
Magento
PWA
Australia

Achievements:

  • Page load time-40%
  • Add-to-cart rate+31%
  • Cart abandonment rate-50%

Industry:

Stationery

Bright Star Kids is an online store of customizable stationery and personalized gifts for children
View more
Magento
PWA
France

Achievements:

  • Total conversions+30%
  • Add-to-cart rate+25%
  • Bounce rate on mobile-25%

Industry:

Electronics

GSM55 is one of the largest suppliers of accessories and spare parts for smartphones in France
View more
Magento
PWA
France

Achievements:

  • Total conversions+30%
  • Add-to-cart rate+25%
  • Bounce rate on mobile-25%

Industry:

IoT

ThingPark Market a marketplace focusing on advanced IoT systems and devices for B2B clients
View more
Magento
PWA
Greece

Industry:

Department store

Overneed is an online store with vehicle spare parts and accessories, tourist equipment, and home goods
View more
Magento
PWA
Ireland

Industry:

Beauty

Bliss is an online store of beauty and healthcare products from well-known and trusted brands
View more
USA

Industry:

Electronics

Curacao is an online and offline department store of electronics, home, beauty, and fashion goods
View more
Magento
USA

Achievements:

  • Page load time-60%

Industry:

Fashion

The Webster is a luxury fashion brands retailer with an online store and offline boutiques

Have project in mind?
Let’s go to work.

Core Web Vitals FAQ

What are Core Web Vitals?

These are three important ranking factors introduced by Google, indicating how web pages perform and what UX an average user gets. Largest Contentful Paint (LCP) measures page speed, First Input Delay (FID; replaced by Interaction to Next Point (INP) in 2024) measures interactivity, and Cumulative Layout Shift (CLS) measures visual stability.

Why Are Core Web Vitals Important?

CWVs are crucial metrics because they're tightly linked to the user experience on a website. CWVs in the Green zone mean the site can boast fast speed, user-friendly interface, mobile-friendliness, and higher visibility in Google search.

How do I assess Core Web Vitals on my website?

To get a general idea of how your site is doing CWV-wise, go to Google Search Console or check page by page in PageSpeed Insights. These tools aggregate field data, meaning they objectively showcase the quality of experience your website brings when users interact with it.

When is the next Core Web Vitals update?

Since the major page experience update in 2021, Google has been periodically adding experimental Core Web Vital metrics. For instance, now, four metrics are in the spotlight because, in March 2024, INP is substituting FID as a measure of page responsiveness. There are some more metrics to keep an eye on, for instance, First Contentful Paint (FCP) and Time to First Byte (TTFB).

How can I improve the CWV score on my site?

To do so, you need to eliminate certain performance issues that slow down loading time and lower site ranking in search engines. We have a number of tactics, including using a content delivery network (CDN) and browser caching, optimizing large page elements and new UI elements, leveraging next-gen formats and lazy loading when it comes to images, and so on.