14 Best Tools To Boost Your Core Web Vitals Score

You already know your website needs to load fast, run smooth, and keep users engaged — but if your core web vitals score isn’t where it should be, Google’s not cutting you any slack. Your rankings suffer, bounce rates spike, and conversions bleed out. And let’s be honest: no business in Singapore competing online can afford to be buried on page two.

Here’s the truth — most articles give you vague advice and outdated tools that barely move the needle. This isn’t one of them. You’re about to get a zero-fluff breakdown of the actual tools top marketers are using in 2025 to diagnose, optimise, and dominate their Core Web Vitals. 

If speed, stability, and user experience matter to your bottom line (and they should), these tools aren’t optional — they’re essential. Let’s get into it.

Key Takeaways

• Real user data matters. Tools like CrUX, Google Search Console, and PageSpeed Insights use field data to show how actual visitors experience your site, which directly affects your Core Web Vitals score.
• Lab tools help you test before launch. Google Lighthouse, Chrome DevTools, and WebPageTest let you simulate performance issues, so you can fix problems before they reach real users.
• Use a mix of tools, not just one. No single platform covers everything. Combine real-world analytics (CrUX), detailed audits (Lighthouse), and ongoing monitors (DebugBear, Super Monitoring) for full performance coverage.
• Speed isn’t just technical — it’s strategic. A poor Core Web Vitals score can hurt SEO, conversions, and customer experience. Prioritising speed is a business decision, not just a developer task.
• Most tools are free or low-cost. Many of the most powerful optimisation tools are free (e.g. GSC, Lighthouse, PageSpeed Insights), so there’s no excuse not to start today.

Why Do You Need to Monitor Core Web Vitals?

You don’t monitor your core web vitals score to please Google. You monitor it because it directly impacts your revenue. Every extra second your page takes to load is a lost opportunity, a bounced visitor, a potential customer gone for good. And in Singapore’s hyper-competitive digital space, your competitors are just one tap away.

Here’s the reality: Google’s Core Web Vitals are not some vague SEO metric. They measure three things that actually affect user experience: loading performance (LCP), interactivity (FID/TBT), and visual stability (CLS). If these scores are off, users feel it. And when users feel friction, they leave. Need proof? Let’s talk numbers.

When Vodafone improved their LCP by just 31%, they saw an 8% increase in sales and 15% improvement in lead-to-visit rate. That’s not theory — it’s what happens when you prioritise performance. And it’s not just Vodafone. Zalando, the European fashion platform, also boosted conversion rates by focusing on CLS improvements across mobile. Their engineers didn’t just tweak design — they engineered growth.

Now think about your own site. When was the last time you reviewed how long your key pages take to load on 4G? Or how often layout shifts annoy your mobile users? If the answer is “I haven’t” or “it’s been a while,” you’re leaving money on the table. Monitoring Core Web Vitals gives you the data you need to fix what’s broken before it costs you traffic, trust, or revenue. 

It’s how you spot performance dips before your customers do — and it’s how you stay ahead of competitors still stuck guessing. This isn’t about ticking boxes. It’s about making your website faster, smoother, and more profitable — using metrics that actually move the needle. Start tracking. Start optimising. Because if you’re not improving, you’re losing. Here are the tools you can use to improve your core web vitals score:

1. Chrome User Experience Report (CrUX)

The Chrome User Experience Report (CrUX) is the gold standard for understanding how real users experience your site — not bots, not lab simulations, but actual people using Chrome in the wild. It collects anonymised, real-world performance data on key metrics like Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), and Interaction to Next Paint (INP) — the exact components of your Core Web Vitals score.

For Singapore marketers working on high-traffic websites, CrUX is indispensable. It gives you performance insights based on real user conditions — from network speed to device type — across thousands (or millions) of pageviews. 

This data powers tools like PageSpeed Insights and Google Search Console, but with CrUX directly, you can query performance data at scale, filter by geography or device, and make data-driven decisions rooted in reality.

Key Features	Collects real-world performance data from actual Chrome users Includes Core Web Vitals metrics: LCP, CLS, INP Data available via BigQuery, CrUX API, and CrUX Dashboard in Data Studio Supports breakdowns by country, device, and connection type Used by Google to inform search rankings Updated monthly with historical trends
Price	Free, accessible via Google BigQuery (some usage tiers in BigQuery may incur minor charges, but CrUX itself is free).
Pros	Offers real user experience data — critical for Core Web Vitals Lets you track how different user segments experience your site Can analyse changes over time with month-to-month comparisons Underpins other tools like PageSpeed Insights and Search Console
Cons	No per-session detail — data is aggregated and anonymised Requires familiarity with BigQuery or Looker Studio for advanced use Not ideal for testing pre-launch or low-traffic pages

2. Google PageSpeed Insights

Google PageSpeed Insights (PSI) is the no-fluff, real-world meets lab-data tool you need when Core Web Vitals actually matter to your bottom line. It combines field data from the Chrome User Experience Report (CrUX) with Lighthouse lab audits to give you the full picture — how users are actually experiencing your site, and what’s holding you back from faster, smoother performance.

For marketers and business owners in Singapore juggling SEO, UX, and paid traffic funnels, PSI is your go-to tool to prioritise what really needs fixing. It doesn’t just say “your site is slow.” It tells you why, and how to fix it — with clear, ranked recommendations. Plus, it’s 100% Google-approved, meaning the insights directly align with how Google ranks and scores performance.

Key Features	Core Web Vitals scoring from real user data (CrUX) Lighthouse-powered lab audits for actionable insights Performance scores for both mobile and desktop Detailed breakdown of render-blocking resources, image optimisation, and more Prioritised improvement opportunities with estimated savings Easy-to-share reports for teams or stakeholders
Price	Free, available to everyone, no login required.
Pros	Combines both field and lab data for a full-spectrum view Gives specific, prioritised suggestions with estimated performance gains Free, fast, and built by the same team that defines Core Web Vitals Accessible even for non-technical users
Cons	Doesn’t track historical trends unless you save reports manually Field data is origin-level, not always URL-specific Can be less useful for testing unreleased pages or variants

3. Google Lighthouse

Google Lighthouse is the tool you turn to when you want more than just a pass/fail score — you want a comprehensive, actionable audit of your site’s performance, accessibility, SEO, and best practices. And yes, it covers Core Web Vitals in detail. Run it directly from Chrome DevTools, the Lighthouse CLI, or as a Node module — making it flexible for marketers and developers alike.

What makes it especially valuable? Lighthouse runs simulated lab tests, meaning you can test new pages, fixes, or A/B experiments before going live. For Singapore-based marketers optimising conversion flows or managing international traffic, this lets you pre-empt performance issues before they hit your real users — and your bottom line.

Key Features	Lab testing for Core Web Vitals: LCP, CLS, INP In-depth performance scoring (0–100 scale) with detailed opportunities and diagnostics Checks accessibility, SEO fundamentals, and progressive web app readiness Suggests specific optimisations (e.g. image compression, lazy loading, critical CSS) Integrates with Chrome DevTools, CI tools, and PageSpeed Insights
Price	Free, available in Chrome and via open-source CLI.
Pros	Gives prescriptive advice with prioritised impact scores Perfect for testing staging pages or updates pre-launch Covers more than just performance — includes SEO and accessibility Constantly updated by Google to reflect latest standards
Cons	Lab data ≠ real-world user data — some metrics may vary from CrUX or GSC Can be overwhelming for non-technical marketers without dev support Doesn’t store historical results unless paired with external tools

4. Chrome DevTools Performance Panel

The Chrome DevTools Performance Panel is a built-in diagnostic tool in every Chrome browser, designed for developers and technical marketers who want to get granular with how their website behaves under the hood. It’s not just about pretty charts — it’s about visualising every single frame, paint, and event that could be slowing down your site.

Want to dig into what’s causing layout shifts or find that one render-blocking script hurting your Core Web Vitals score? This panel gives you an X-ray view of how your page loads and interacts. For businesses in Singapore with development resources on hand, the Performance Panel is a free and powerful way to pinpoint exactly what’s impacting performance — and why.

Key Features	Visual breakdown of page load timeline, scripting, rendering, and painting Track Core Web Vitals like LCP, CLS, INP in real-time View main thread activity, including long tasks that affect interactivity Filmstrip view to capture screenshots during load Audit CPU usage, memory leaks, and layout thrashing Analyse JavaScript execution and asynchronous task timings
Price	Free, included with every installation of Google Chrome.
Pros	Immediate, real-time feedback with developer-grade accuracy No setup required — built right into Chrome Helps diagnose specific code or assets causing layout shifts or slow paint Essential for performance debugging, especially during staging and QA
Cons	Not ideal for non-technical users — the interface assumes developer knowledge Doesn’t provide aggregated or historical data like Lighthouse or Search Console Best for manual, one-off analysis, not ongoing monitoring

5. Google Search Console

Google Search Console (GSC) isn’t just a tool — it’s your direct line to how Google sees your site. If you’re serious about improving your Core Web Vitals score, this is where you get clarity straight from the source. 

It gives you real-world performance data (sourced from Chrome UX Report), alerts for indexing and mobile usability issues, and a full breakdown of CWV metrics like Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), and Interaction to Next Paint (INP). For marketers and business owners in Singapore, GSC is essential. It’s free, accurate, and backed by Google’s own data — the same data used in rankings. 

Whether you’re managing an eCommerce site or optimising a B2B landing page, this is the tool that shows you what Google expects, and where your site is falling short.

Key Features	Core Web Vitals Report from real-world Chrome UX data Mobile Usability Tracking to identify issues impacting mobile users Index Coverage Reports to see which pages Google can or can’t index URL Inspection Tool for real-time page diagnostics Performance Reports on clicks, impressions, CTR, and search queries Sitemap Submission and validation Security Issues & Manual Actions alerts
Price	Free
Pros	Powered by Google’s own performance and ranking data Tracks real user Core Web Vitals from Chrome browsers Free and integrates seamlessly with tools like Google Analytics and PageSpeed Insights Essential for SEO, indexing, and site health monitoring
Cons	Limited to Google’s ecosystem Doesn’t offer synthetic testing — real-world data only Limited visualisation or historical trend analysis without external integrations Some metrics are aggregated at the origin level, not per URL

6. Super Monitoring

Super Monitoring is a comprehensive website monitoring service designed to ensure your website’s availability, performance, and functionality. It offers a range of features including uptime monitoring, response time tracking, content verification, and transaction monitoring. With its user-friendly interface and real-time alerts, Super Monitoring helps businesses promptly identify and address issues, ensuring a seamless user experience. 

This is particularly beneficial for digital marketers and business owners aiming to optimise user experience and SEO rankings.

Key Features	Uptime monitoring Functionality checks Email and SMS alerts
Price	Super Plan: $5.99/month (~SGD 8.10) – Includes 1 check. Hyper Plan: $14.99/month (~SGD 20.30) – Includes 3 checks. Extra Plan: $19.99/month (~SGD 27.10) – Includes 5 checks. Ultra Plan: $29.99/month (~SGD 40.70) – Includes 10 checks. Multi Plan: $39.99/month (~SGD 54.30) – Includes 20 checks. All plans come with a 14-day free trial.
Pros	Comprehensive monitoring features covering various aspects of website performance. Real-time alerts help in promptly addressing issues. User-friendly interface suitable for users with varying technical expertise. Flexible pricing plans to accommodate different business needs.
Cons	Advanced features like transaction monitoring are available only in higher-tier plans. The number of checks is limited based on the chosen plan.

7. DebugBear

DebugBear is a performance monitoring platform designed to help businesses optimise their website’s Core Web Vitals (CWV) and overall user experience. It offers both synthetic and real-user monitoring, providing comprehensive insights into how users interact with your site. 

By tracking key metrics such as Largest Contentful Paint (LCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS), DebugBear enables businesses to identify performance bottlenecks and implement targeted improvements.

Key Features	Core Web Vitals monitoring Performance regression alerts Detailed reports
Price	Starter Plan: Approximately SGD 90/month (~€60), includes synthetic monitoring for up to 25 URLs and real-user monitoring for up to 10,000 page views per month. Professional Plan: Approximately SGD 270/month (~€180), includes synthetic monitoring for up to 100 URLs and real-user monitoring for up to 50,000 page views per month. Enterprise Plan: Custom pricing for larger websites requiring advanced features and higher usage limits.
Pros	Comprehensive monitoring combining synthetic and real-user data. Detailed insights into CWV metrics and their impact on user experience. Integration with Google’s CrUX data and Lighthouse tool for in-depth analysis. Global test locations to assess performance across different regions.
Cons	Pricing may be higher compared to some other monitoring tools. Advanced features may require a learning curve for new users.

8. WebPageTest

WebPageTest is a comprehensive website performance testing tool that allows you to evaluate your site’s Core Web Vitals and overall performance from real browsers at consumer connection speeds. It offers both free and paid plans, providing flexibility based on your testing needs. 

With its detailed optimisation recommendations and global testing locations, WebPageTest is a valuable resource for digital marketers and business owners aiming to enhance user experience and SEO rankings.

Key Features	Multi-location testing Real browser testing Detailed performance reports
Price	Free Plan: Provides access to basic testing features with limited test runs. Pro Plan: Starts at $180/year (~SGD 243), offering additional features such as API access, No-Code Experiments, and extended test runs. Expert Plan: Custom pricing for enterprise-level needs, including Real User Monitoring (RUM), Single Sign-On (SSO), and extended test history.
Pros	Comprehensive testing with real browser simulations. Global test locations for diverse performance insights. Detailed optimization recommendations to enhance site performance.
Cons	The free plan has limited features and test runs. Advanced features are available only in paid plans.

9. AppDynamics

AppDynamics, a Cisco company, is a comprehensive application performance management (APM) platform that offers real-time monitoring of your website’s performance, including Core Web Vitals. By integrating real-user monitoring (RUM) and synthetic monitoring, AppDynamics provides a holistic view of how users experience your site across various devices and network conditions. 

This is particularly beneficial for digital marketers and business owners aiming to optimise user experience and SEO rankings.

Key Features	Real-time performance monitoring End-user monitoring Business transaction insights
Price	AppDynamics offers a 15-day free trial with no credit card required.  For detailed pricing information, it’s recommended to contact AppDynamics directly, as pricing is tailored based on specific business needs and scale.
Pros	Comprehensive monitoring across synthetic and real-user data. Detailed insights into Core Web Vitals and other performance metrics. Global monitoring capabilities to assess performance across different regions. Integration with various platforms and tools for enhanced analysis.
Cons	Pricing may be on the higher end for small businesses. The platform’s extensive features may require a learning curve for new users.

10. ThousandEyes

ThousandEyes is a comprehensive digital experience monitoring platform that offers in-depth visibility into Core Web Vitals (CWV) and overall website performance. By leveraging both synthetic and real-user monitoring, it enables businesses to identify and resolve performance issues across their entire digital infrastructure. 

This is particularly valuable for digital marketers and business owners aiming to optimise user experience and SEO rankings.

Key Features	Simulates user interactions to proactively detect performance bottlenecks before they impact real users. Captures actual user data to provide insights into how real visitors experience your website. Monitors LCP, FID, and CLS to assess loading performance, interactivity, and visual stability. Offers monitoring from various geographic locations to understand performance variations across regions. Provides insights into how network and application layers affect website performance
Price	Custom pricing
Pros	Comprehensive monitoring across synthetic and real-user data. Detailed insights into Core Web Vitals and other performance metrics. Global monitoring capabilities to assess performance across different regions. Integration with various platforms and tools for enhanced analysis.
Cons	Pricing may be on the higher end for small businesses. The platform’s extensive features may require a learning curve for new users.

11. PageSpeedPlus

PageSpeedPlus automates your PageSpeed Insights and Web Vitals monitoring, so you’ll never miss a performance regression. You get both lab data from Lighthouse and real-user metrics (RUM) from CrUX, all in one dashboard. Instead of manually running PageSpeed Insights for each URL, you can schedule hourly, daily or weekly checks, receive instant alerts via email or Slack, and export data straight to Google Sheets. 

This ensures you—and your team—have actionable insights the moment a key page dips below your threshold. For digital marketers in Singapore, PageSpeedPlus turns repetitive testing into an automated workflow: full-site scans via your sitemap, competitor comparisons, cache-warming, and API access all streamline optimisation efforts. 

You’ll see historical trends for LCP, FID/INP and CLS over time—so you can correlate score changes with code releases or content edits. And with on-demand reports and white-label dashboards, it’s perfect for agencies sharing progress with clients.

Key Features	Real User Monitoring (RUM) of LCP, INP and CLS Scheduled checks (hourly, daily, weekly) and full-site scans Competitor comparison and cache-warmer service Alerts via Email, Slack & Microsoft Teams Google Sheets export & comprehensive API
Price	Basic: ~SGD 30 (€20) – 25 URLs, daily checks, 1 month history Standard: ~SGD 90 (€60) – 100 URLs, hourly checks, 6 months history Pro: ~SGD 300 (€200) – 500 URLs, on-demand scans, 1 year history Enterprise: custom pricing for unlimited URLs & features
Pros	Automates repetitive performance testing Combines lab and field data in one view Flexible scheduling and alerting options Exportable data for deeper analysis
Cons	Pricing tiers may be steep for very small sites Learning curve for setting up API and advanced automations

12. PageMTR

PageMTR is a comprehensive website performance monitoring tool designed to help digital marketers and business owners optimise their site’s Core Web Vitals. By providing real-time analytics, PageMTR enables users to identify and address performance issues promptly, ensuring an enhanced user experience and improved SEO rankings.

For digital marketers in Singapore, where website performance directly impacts user engagement and conversion rates, PageMTR offers a reliable solution to monitor and improve site speed and stability. Its user-friendly interface and detailed reports make it accessible for teams without extensive technical backgrounds.

Key Features	Real-time performance analytics Monitoring of Core Web Vitals (LCP, FID, CLS) Automated alerts for performance issues Detailed reporting for performance trends
Price	Lifetime deal available at USD $49 (~SGD 66.50)
Pros	Affordable one-time payment Comprehensive monitoring features User-friendly interface
Cons	Limited integration options with other tools May lack some advanced features found in premium tools

13. Little Warden

Little Warden is a proactive website monitoring tool designed to help digital marketers and business owners keep track of critical website changes that could impact SEO and user experience. It automates over 30 checks, including monitoring for domain and SSL certificate expirations, changes in robots.txt files, redirect issues, and modifications to meta tags. 

By providing timely alerts, Little Warden ensures that you can address potential problems before they escalate. For digital marketers managing multiple websites or client portfolios, Little Warden offers a centralised dashboard to monitor various technical aspects. Its integration with Google Search Console allows for seamless syncing of new sites, ensuring comprehensive coverage. 

Additionally, customisable alerts via email, Slack, or webhooks keep your team informed of any significant changes, facilitating prompt action.

Key Features	Monitors over 30 technical checks, including domain and SSL expirations, robots.txt changes, and redirect issues Integration with Google Search Console for automatic syncing of new sites Customisable alerts via email, Slack, or webhooks Centralised dashboard for managing multiple websites Detailed reports for tracking and auditing changes
Price	Freelancer Plan: $34.99/month (~SGD 47.70) Small Team Plan: $54.99/month (~SGD 75.00) Agency Plan: $89.99/month (~SGD 122.70) Large Agency Plan: $199.99/month (~SGD 273.00)
Pros	Comprehensive monitoring of critical website elements Proactive alerts to prevent potential issues Suitable for managing multiple websites or clients User-friendly interface with detailed reporting
Cons	May be more feature-rich than necessary for single-site owners Pricing may be a consideration for small businesses

14. Core Web Vitals Score – Treo Site Speed

Treo Site Speed is a performance monitoring tool that leverages real-user data from Google’s Chrome User Experience Report (CrUX) to provide insights into your website’s Core Web Vitals. By focusing on actual user experiences, Treo offers a more accurate representation of how your site performs in the real world, which is crucial for businesses aiming to enhance user satisfaction and SEO rankings.

One of Treo’s standout features is its ability to display performance metrics over a 12-month period, allowing you to track improvements or regressions over time. Additionally, Treo offers geographical performance mapping, enabling you to identify and address location-specific issues that may affect user experience. 

This level of detail is particularly beneficial for businesses with a global audience or those targeting specific regions.

Key Features	Utilises real-user data from Google’s CrUX for accurate performance insights Displays Core Web Vitals metrics over a 12-month period Geographical performance mapping to identify location-specific issues Comparison with competitor websites to benchmark performance Filtering options by device type and connection speed
Price	Free version available Premium plans start at approximately USD $1,099/year (~SGD $1,480)
Pros	Provides real-world performance data for more accurate insights Long-term performance tracking aids in identifying trends Geographical mapping helps in addressing region-specific issues Competitor comparison feature assists in benchmarking
Cons	Premium pricing may be a consideration for smaller businesses Limited integration options with other analytics platforms

Improve Your Core Web Vitals Score Today

You’ve seen the tools. You understand the stakes. Now it’s time to act. Improving your site’s performance isn’t about ticking boxes — it’s about delivering a faster, smoother, more trustworthy experience that both users and Google reward. Whether you’re battling high bounce rates, declining search rankings, or slow mobile pages that kill conversions, your Core Web Vitals score is the metric that ties it all together.

But if you’re tired of piecing it together on your own, work with MediaOne — Singapore’s trusted SEO experts. We don’t just run audits. We turn data into action and fixes into revenue. Ready to optimise what matters? Talk to us today and let’s start improving your Core Web Vitals score where it counts — with results.

Frequently Asked Questions

How does site speed affect SEO rankings?

Site speed is a direct ranking factor for Google. Faster websites enhance user experience, reduce bounce rates, and improve dwell time, all of which contribute to better SEO rankings. 

What are the best practices for improving website load time?

Optimise images, enable browser caching, minify CSS and JavaScript files, and utilise a Content Delivery Network (CDN). These practices can significantly reduce load times and enhance user experience. 

How can I test my website’s performance?

Tools like Google PageSpeed Insights, GTmetrix, and WebPageTest allow you to evaluate your website’s performance by analysing various metrics such as load time, page size, and resource requests. 

What factors can affect my website’s speed test results?

Factors include server response times, image sizes, the number of requests made to the server, and the use of large files. Additionally, the testing location and internet connection speed can influence results. 

How much does site speed affect SEO?

Site speed is a ranking factor for Google. A slow-loading website can negatively impact user experience, leading to higher bounce rates and lower SEO rankings.