Top 5 Core Web Vitals Error Monitoring Tools

Top 5 CWV Error Monitoring tools for Real Time Reporting in 2021

On the Internet you can find a lot of tools to work on SEO and, one of them is the Core Web Vitals. Thanks to them you can know what the performance of your website is, as well as if the SEO strategies that you are implementing work correctly so that you attract more users and sells.

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Lots of Core Web Vitals monitoring tools out there, to monitor Core Web Vitals errors on your website. Picking the best Tools to Monitor Core Web Vitals errors can be time taking.

Some of these measurements are already present in the Page Speed Insights tool and Google Search Console. But these all are Lab tools that do not give data much deeply. 

There are 2 types of Core Web Vitals Tools:

  • Field tools provide us the real-world data that comes from Website users in the field that is called Real User Monitoring (RUM) and the data it collects is called field data. So we called it Field tools.
  • Lab tools such as Google Search Console and Pagespeed Insights provide us the data on how potential users may experience a website page and are used for debugging by developers. Lab tools data are called lab data.

Fields tools are more useful to Optimize Websites for Core Web Vitals. So in this article, you will know about the Top 5 Core Web Vitals Monitoring tools for Real Time Reporting.

Let’s learn first…

What are Core Web Vitals?

The “Core Web Vitals” are metrics that serve to evaluate the performance of a website concerning the user experience (UX), and at the moment they measure three basic elements: page load, interactivity, and visual stability of the site.

Web Vitals seeks is to provide a more complete view of the quality of experience that users have with a website while simplifying the way it is measured through indexes.

There are 3 Core Web Vitals metrics:

  • Largest Contentful Paint (LCP): Measures the time interval from when the site begins to load until the largest element is fully loaded. Currently to get a “Good” rating you have to load in 2.5 seconds. If it takes more than 4 seconds it is “Poor”.
  • First Input Delay (FID): The amount of time it takes for a page to be ready for the user to interact with it (for the page to respond when clicking, scrolling, or using the keyboard). To get a “Good” rating it must be less than 100 ms, more than 300 ms is “Poor”.
  • Cumulative Layout Shift (CLS): Measures how much the structure of a page varies while it is loading. Specifically, it measures the distance and spacing of the viewport, which changes due to DOM manipulation or lack of dimensions for important elements. For example, if the main image has no defined dimensions, you can load the text first and when the person is reading, the text moves down when you load the main image. The most dramatic cases are when it happens with buttons or banners, where the user can make a wrong click because the button was moved. The score to be obtained must be less than 0.1 to obtain a “Good” rating, more than 0.25 is “Poor”.

Top 5 Core Web Vitals Monitoring Tools

1. SEMrush

The Semrush team got down to business when they learned of Google’s new implementation of Core Web Vitals.

They currently have a beta version where they measure the metrics using Lighthouse, instead of providing the FIB they offer us the TBT because it is not possible to obtain field data under laboratory conditions.

So if you go to the audit section of the site, you will have a pretty cool screen with the LCP, TBT, and CLS.

All the adjustments you make in real-time will be refreshed in the report. This enables a quite dynamic optimization when checking the efforts made.

Of course, if you want to analyze a page with more than 100 URLs you must hire the service.

2. SE Ranking

SE Ranking has recently renewed its analysis formula, polishing various aspects and including new ones such as Core Web Vitals to compete against the major benchmarks in the sector.

If you are a newbie in the world of web optimization you will have no problem identifying errors that require a quick solution.

They explain it in detail in their article. In the report, they will tell you how to solve the problems according to their classification. For example, if it is an error, or a warning.

3. Sentry

Sentry is also a great Core Web Vitals Monitoring Tool with 70+ supported Platforms such as WordPress. 

Sentry gathers aggregate field data instead of lab data on what your users really experience when they act with your website pages. This includes context on variable network speed, browser, device, and region to monitor Core Web Vitals effectively.

In addition, you can also see a graph that has specified URLs with negative values, those that need some improvements, and those that are already optimized. Also, shows Core Web Vitals Metrics Score and what not?

In the reports it will show you all the problems in detail, differentiated in the types of Core that there are and in severity. By entering any of these details, you will be able to expand the information of the URLs that have errors.

4. RapidSpike

RapidSpike is also a great Core Web Vitals error monitoring tool for real-time reporting. If you want to see the metrics of the Core that your websites have, this can be done very easily by using the “RapidSpike”. And it is that, surely, at some point, you have spied on your competition to know how well they are doing and what they are failing.

RapidSpike’s Performance dashboard gives an overview of your website performance by region and device. And The Graph helps to visualize how your Core Web Vitals improvements have affected your website performance over time and can be viewed by the three Core Web Vitals metrics LCP, FID, and CLS as well as Speed Index.

“Google’s Chrome UX Report is updated every 28 days, RapidSpike Core Web Vitals report can be updated up to every 5 minutes, helping you monitor your Core Web Vitals scores,” they say.

5.- Chrome UX Report (Free Tool)

Chrome UX Report will allow you to know what is the optimization that a website has with respect to Core Web Vitals. You can do this by browsing some web pages that Chrome carries out.

You should know that they will always give you their consent so that you can do it, so it will not be a problem.

In order to do this, it is very important that you know that this tool uses some Web Practices parameters. In them, it takes into account the CCS and JavaScript, the text and content that the site has, the images used, the understanding, and the rendering.

It also takes into account other aspects such as the user’s location, the country where they are, their type of connection, the type of device where they are browsing, among others.


SEO is more alive than ever. Every so often we see how Google modifies and perfects its algorithms to try to provide the best response to the user.

For this reason, today it is one of the best search engines on the Internet and one of the most widely used by far. If we want to succeed in its ranking, we must adapt to its new proposals, such as Core Web Vitals.

Remember that these metrics have relative importance among the new SEO factors since they are basic parameters required by Google. Therefore, do not object to these parameters, but make sure to include them in your optimization strategy.

You need our help? We have a professional developers’ team that will fix all types of CWV (Core Web Vitals) errors significantly for our clients for the maximum Website Speed ​​and Performance. If you want Superior Website Speed then Check Our Affordable Pricing, so we can start Optimising your website.

If you have any question, then don’t hesitate to share thoughts in the comment box. We will help.

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