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Learn How to Improve Your Site Performance Using Chrome UX Report

Alekh Verma | February 7, 2023
CrUX Report

Measuring the website performance can be quite a challenging undertaking for a lot of small business owners. Although a thorough picture of the hard data may be obtained by looking at RUM metrics including performance, page load, and page visits. However, the RUM (real user measurement) data is simply one of the many larger components assessments of a website’s success and influence.

You must balance users' experiences on your site within the context of user experience across the internet to be truly useful and give meaningful data. Businesses can better understand the success of their site and where certain metrics fall within a wide range of criteria by taking a step back and looking at the big picture. The Chrome UX Report comes into play in this situation.

Making Web Performance Data Widely Available to the Public

The Chrome UX Report, first created by Google in 2017, is a publicly accessible dataset of actual user measurements. CrUX report gathers data on website performance for Chrome users from millions of websites.

That data would be priceless, though challenging to use resources if it were just compiled. But when used with the appropriate program, the data is changed. When used properly, the CrUX Report turns a big collection of online performance data into a resource that is easy to understand and use.

Understanding How the Health of a Website affects the Page Experience and User Experience

Google is constantly looking for new, cutting-edge ways to give users a seamless, clear internet experience. Google's work in enabling website owners to maximize their sites is a crucial cornerstone of that effort.

Everyone benefits when website owners properly deliver user-friendly, useful web pages. But if you want to be successful in any endeavor, being aware of the rules and expectations is crucial. In May 2020, Google revealed a new set of metrics to evaluate how user experience was impacted by website performance.

These were its essential web vitals. The goal was to get rid of arbitrary and insignificant elements that were muddying the waters. To accomplish this, Google reduced a website's user experience rating to three key criteria:

  • LCP (Largest Contentful Paint)
  • FID (First Input Delay)
  • CLS (Cumulative Layout Shift)

The importance of the page experience in the overall user experience is the foundation of Core Web Vitals.

  • Google's definition of "page experience"

Page experience gauges how visitors feel about their interactions with certain web pages. LCP, FID, and CLS, the three components of Core Web Vitals, when combined, produce significant information. CWV results as a whole paint a clear picture of a user's page experience on a certain website.

Their overall Google search engine user experience is ultimately determined by this page's experience. It was declared permanent a year after the initial announcement. With the permanent integration of Core Web Vitals into its algorithm, Google completed the integration of the new measures.

Core Web Vitals are concerned with a website's responsiveness, visual stability, and speed. It is important to remember that they are only a small part of the larger picture. The Google search algorithm is constantly changing, posing a challenge and necessitating awareness on the part of experienced SEO operators. Originally, it was stated that there were over 200 ranking variables.

Some are studied across the industry and are given far more weight today. These elements are constantly evolving as Google changes in response to new data and user behavior. Every year, the ranking variables should be reevaluated.

The Google Search Algorithm: A Breakdown

Despite the legend that has been applied to the Google search algorithm over time, it has a clear foundation. It is backed up by the organization's commitment to providing all users with a smooth and efficient search experience. Throughout the year, Google tweaks its search algorithm to best serve the needs of the current and future world population. The Google search algorithm is based on a long list of variables that are constantly changing.

As a result, the SEO industry has consistently focused on the most important factors to consider each year. Knowing where to place your priorities can assist you in developing a website that ranks as high as possible. These may include, but are not limited to:

Essential Web Vitals.

  1. Superior Content.
  • Regularly Published
  • Depth, Freshness, and Accuracy are featured.
  • adheres to the YMYL and E-A-T guidelines.
  1. Page optimization (On-Page).
  2. User involvement
  3. Domain authority and link building.
  4. Utilizing a Keyword Strategy (Meta Title Tags).
  5. Mobile-Friendliness.
  6. Query Intent.
  7. Links within.
  8. YouTube Search (including Clip Markup and Seek Markup).
  9. Site security for HTTPS.
  10. Highlighted Snippets.

A Comprehensive Look at Key Web Vitals

It's excellent to comprehend how page and user experience contribute to the metrics that make up CWV. It is essential for you to have thorough knowledge if you’re looking to get most out of the Chrome UX Report for your business.


The largest contentful paint (LCP) gauges how quickly a website loads. When a user visits a URL, the LCP metric measures how long it takes to load the largest piece of content (a video, an image, a text block, etc.). Google advises websites to keep LCP for 75% of their page loads under 2.5 seconds.


The first input delay indicates how engaging a page is. It is the amount of time that passes between a user's activity and the browser's response.

When a link, button, or other actionable element is clicked, the webpage changes from being static to being interactive at that specific moment. Google advises websites to maintain their FID for 75% of page loads under 100 milliseconds.


Every layout change on a site is measured by the cumulative layout shift. There is no shifting; it begins at zero and progresses to a positive number (in correlation with the total amount of shifting). Factors that cause shifting include the presence of buttons, graphics that force a text block to move, and dropdown banner advertisements.

A CLS score of 0.1 or less is the minimum that Google advises for webpages. One could argue that when reduced to a single fundamental principle, speed wins.

The performance of a website is critical to the user experience and is carefully assessed and measured. The core of the SI (Speed Index) statistic is how rapidly a page's visual content is shown. There is a very small window of time for information/content delivery speed and performance to influence users. A better user experience is rewarded by SI scores for pages that load the most material in the quickest time.

Perception and the Special Bond between LCP and CLS

Anyone who has ever used a website knows how frustrating it can be to wait for it to fully load. The genuinely painful recollections for seasoned internet veterans are those of the dreadful dial-up era. The slow implementation of 5G wireless internet and mobile networks is currently taking place. As a result, lightning-fast speed has an impact on many facets of contemporary life; speed is expected. There are serious repercussions when a visitor must wait a long time for your website to load.

It has a negative effect on how they see your brand and frequently drives them away completely. The content load process had a big impact on how Google defined the underlying workings of page performance. Despite its daunting sound, LCP is actually quite simple. Its fundamental question is: How soon does a web page's most important material load? Images, image tags, video thumbnails, background images using CSS, and text can all be included in this material.

LCP emphasizes the significance of consumer perception. When does a website's relevance to a visitor start to increase? When the element that is most obvious and significant appears? It can seem like an eternity before a person begins to see the main content after clicking to open a website. Google suggests that a page's content loads in 2.5 seconds or less because this first interaction is urgent and crucial.

LCP can be reduced with focus, allowing users to view and experience a page more quickly. It rightfully deserves to be listed as one of the Core Web Vitals because it is the cornerstone of a top-notch user experience. But then what? The promise of that spotless LCP is defeated if the website that loads for the visitor is a frustrating encounter. In this case, the user experience event measured by CLS is made clear.

User impression is crucial to CLS' relevance, just like it is for LCP. The amount that a page suddenly shifts over the course of its life is measured by CLS, which quantifies the perceived visual stability of a page.

Here, the scope and fullness of unanticipated shifting that visitor encounters are the main topics of discussion. No matter how long a visitor stays on a website, they should anticipate a seamless experience free of recurrent, abrupt changes. The outcomes should be the same whether it's a quick bit of news or a detailed study that takes a long time to browse through.

Equally significant, both websites merit a fair evaluation. Google developed a special method to indicate significant layout changes in order to guarantee this. Session windows, session gaps, and layout shift amounts were only a few of the many considerations that went into this system. Google's continuous efforts have produced a measure that sheds much-needed light on a significant aspect of the visitor experience. 

A key component of LCP and CLS strategies is image optimization.

The optimization efforts for LCP and CLS demonstrate how important it is to comprehend and use image optimization. A recurring trend appears when you examine the methods that help to enhance outcomes for either metric. Owners need to be deliberate in their approach if they want to deliver a website with high-quality Core Web Vitals. They must deliberately manage the particulars of image and video files as well as the timing of their integration.

Largest Contentful Paint (LCP)

Cumulative Layout Shift (CLS)

  • Give photos and video characteristics with width and height.
  • Integrate information (such as advertising and embeds) properly with well-timed JavaScript
  • Recognize the best ways to use web fonts.
  • Manage page transitions with anticipated layout changes.

How Image Optimization Is Important For LCP

The compression and optimization of images have a significant impact on LCP. This is especially true for website owners who are unable to change the response time of their servers. The main goal of image optimization is to make use of the most useful qualities for images.

This involves utilizing cutting-edge file formats and the best size and resolution. Google's WebP image format is the most recent and efficient one, offering the best lossless and lossy compression for web photos. Both manual pre-upload converters and WebP image compression plugins are frequently free and simple to use.

Critical Elements in Preventing Cumulative Layout Shift Are Width and Height Attributes.

When a visitor tries to read the material on a website, nothing is more annoying than the text abruptly changing. The browser frequently appears to be waiting for the ideal opportunity to strike just as they are getting immersed. They are left to determine where their position shifted after an abrupt shift happens. A user's experience will be regularly and negatively impacted by this, making it harder and harder to keep them on board. A website owner can avoid CLS by setting the appropriate characteristics, which is a straightforward but incredibly effective action. By defining Width and Height properties for images and videos, they prevent the browser from straying outside of predefined bounds.

Little guidance exists to ensure that the visual material doesn't cause trouble when loaded in the absence of defined Width and Height specifications. The effect of setting max-width with CSS is enhanced when using responsive images. This measure emphasizes the value of CSS allocating enough room for advertisements by applying it to both ad pictures and ad videos. Effectively limiting ad content will prevent it from shifting to a page that has already loaded.


Business owners want more than just their websites to operate at their highest level of proficiency. They want to make sure that it will efficiently draw in and retain visitors. It's simpler to deter a potential site visitor than to discover a social media argument in progress. The majority of modern internet consumers anticipate lightning-fast speeds and are becoming more mobile-centric.

Leaders must comprehend Core Web Vitals in order to prosper in that world rather than just endure it. They must comprehend how Core Web Vitals' interconnected components affect performance. Leaders may make the most of the CrUX Report if they are provided with this information and insight. The advantages of allowing the CrUX Report to influence and direct best practices are clear to see.

Alekh Verma

CEO and Founder at eSearch Logix Technologies!

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