What Is Largest Contentful Paint (LCP): Optimize For Better Ranking

Do you know what the new ranking factor will be launched by Google? any guesses!! No, ok, I’ll tell you. The Largest Contentful Paint soon to be launched by Google.

Earlier metrics were not able to give results to Google much better to measure web pages. That’s why Google has announced the introduction of new metrics.

These new metrics from Google, like First Contentful Paint (FCP) page, catch any glitch in the loading experience right in the beginning.

This change is going to be done in the page experience soon. If you want these metrics to not have much impact on your web page, then you will read this article carefully. Here I will give you complete information about Largest Contentful Paint. So let’s start.

What Is Largest Contentful Paint (LCP)?

Largest Contentful Paint (LCP) is a part of Core Web Vitals. LCP measures the largest content element of a web page that is visible on the viewport. It is mainly used to check the loading speed of the main content of a web page. Apart from this, these elements also measure video poster images, background images, paragraph tags, etc.

LCP is also called a paint timing metric. Such as First Paint and First Contentful Paint (FCP). Here in the First Contentful Paint, contentful means to render the image and text content.

But note that the LCP is later updated in the process of page load. Let me explain this to you through an example, this process is possible only when the image with low resolution is replaced with the image with high resolution. 

What is a good largest contentful paint score?

You must have known this well that what is most important for Google is the experience of its users. For which he makes every possible effort to give his users relevant answers to the questions asked by them. Therefore, Google shows the same pages on the first page of its search engine result page, which are very accurate with the questions of its users.

If you want your website’s pages to rank on the first page of SERPs as well. So you have to focus on whether the loading speed of the largest content of your web page is 2.5 seconds or less.

If the score of the largest contentful paint on your web page is 2.5 or less, then it will be considered good

But if this score is 4.0 seconds, then you will see a signal of needed improvement on your LCP. And if your LCP score is more than this, your web page will be placed in the poor category. Apart from this, an interesting thing about LCP is that it determines 25% of the whole lighthouse score.

How to measure LCP?

You need to know how to measure Largest Contentful Paint. Because only then you will be able to understand LCP better. 

For your information, let me tell you that LCP can be measured in 2 ways, first field, and second lab. Where on one side the field is used directly on the website and on the other side the lab is used to show the simulations performed by the algorithm. 

To measure LCP, below I have suggested the names of some tools. Which are very useful for you. The names of these tools are as follows: 

Field tools 

  • PageSpeed Insights
  • Search Console (Core Web Vitals Report)
  • Chrome User Experience Report
  • JavaScript

Lab tools

  • WebPage Test
  • Chrome DevTools
  • Lighthouse
  • Chrome Web Vitals Extension

Measure LCP In JavaScript (API)

Mostly JavaScript is used to measure LCP. You can use the Largest Contentful Paint API to measure LCP in javaScript. When the LCP is measured in the JavaScript API, it allows it to control it closely.

If you want, you can take the help of PerformanceObserver to access any web page open in your browser.

Note that whenever you update Largest Contentful Paint Then you will see a message in the console. This message will tell you about HTML elements and size elements.

Why is LCP Important For SEO?

LCP is important for SEO because Google always wants to give the best experience to its users. Therefore, when a user searches a topic on Google’s search bar, then it is an attempt of Google at that time to answer their user exactly according to their searched topic.

Do you know how many ranking factors Google has? Any guess!! It may be that many of you bloggers know the answer to my question, but let me tell those bloggers who do not know, that Google has about 200 ranking factors to measure websites.

But as you know, Google always changes its algorithm. So this time Google is changing in the page experience of the search console. Google has announced that it will be going to add core web vitals to the page experience in mid-June 2021. Core Web Vitals is a metric that will measure the loading speed, interaction, and visual stability of pages.

Here the work of LCP is to measure the loading speed of the largest content of the web page of any website. So if you have done the SEO of your web pages properly and at the same time you have also focused on the loading speed of the largest content of your post, then only your web page will be considered correct for LCP. 

What elements are considered in LCP?

Now, The Largest Contentful Paint API is currently considered. And it is built on element timing API.

Here the role of the element timing API server is to track the rendering timestamps of the text and image elements. Apart from this, the element timing API server is also used to monitor and measure the loading performance. Like;

  • <image> elements,
  • <image> elements inside <svg> documents,
  • poster image is used for <video> elements, 
  • background <image> elements loaded via URL ( ) function,
  • <block-level> elements text nodes.

These elements are introduced in the beginning in simple form as you will be seeing in this set. After that, more <svg>, <image> are added to it.

How to determine an element’s size?

First of all, let me tell you that the size of any element for the Largest Contentful Paint will be considered only when it is visible to the users inside the viewport. If it extends to the outside of the viewport, then the count of that size of the element will not go into the LCP.

If we talk about image elements then they are first resized from the old size because it is done. After all, the users can see it on all kinds of screens. Meaning these elements are made user-friendly. You can do this process by compressing the size of image elements. On the other side, in-text elements, all you have to do is focus on the size of the nodes. 

How to optimize LCP for better ranking?

If you want your website to rank on the first of your search engine result page then first you will have to optimize your web pages for LCP. For your help, I have explained some points below. Through them, you will be able to optimize LCP.

1. Compressing Image Size

One thing you always have to keep in mind is that whenever you add images to your content, then apply the image by compressing it. By doing this, the size of your image will be perfect for every type of screen, whether it is a smartphone or desktop, or tablet.

When you put the compressed images in your post, it will also prevent your web page from being overloaded. Thus it can generate high LCP. And from this, you also have the advantage that when your visitors open your post, then the images you put in front of them will be loaded easily.

2. Use CDN

First of all, let me tell you that here CDN stands for Content Delivery Network. When you use a single server, users have to wait until their browser completely renders your content. By using CDN, you can deliver your content worldwide. CDN also has the advantage that it can load images of your content faster.

3. Optimize Your Server

If you want the LCP of your web pages to be good, then for that you will have to optimize your server. Because a slow server greatly affects the ranking of the website. Also, if your server reacts very slowly to notifications sent from the browser, then your LCP will also be affected.

You can use the Word Fence Plugin for WordPress to optimize your server. You can find out what kind of problems in your web pages via WordFence. Once the problem is detected, then you can block it.


The loading speed of its pages is very important for any website. And Google also wants that when a web page is open in front of its users, then its loading speed should be fast. Keeping this in mind, Google has decided to bring LCP as a new ranking signal. So, he will soon launch LCP with Core Web Vitals of Page Experience.

The job of this parameter is to find out whether the visitors who are visiting the web page of the website are satisfied or not. In addition, it also measures the largest content and elements of that page. A good largest contentful paint should score less than 2.5. You measure your website’s LCP in two ways: first is field data and second is lab data. In both these data, you will find different tools. You can easily measure LCP via this. I hope that my article (What Is Largest Content Paint (LCP): Optimize For Better Ranking) will be useful to you.

FAQ: What Is the Largest Contentful Paint?

There are still many bloggers who are worried about what LCP is and are also searching a lot of questions on the internet related to it. Given this problem of bloggers, I will answer the 3 questions asked by them in this article.

Q1. How can I stop LCP?

Ans. When LCP measures the web page of your website, then you have to ensure that there is no problem of any kind in its measuring. Scripts and Stylesheets are both render-blocking resources. 

You have to prevent both of them from loading on LCP. As well as, you have to defer JavaScript and CSS.

Q2. How Can I Search My Largest Content Paint (LCP)?

Ans. If you have added your website to Google search console profile, then you can find out in the core web vitals of page experience. There you will know what is the score of your website’s web pages.

Q3. How can I improve my LCP?

Ans. You can improve your LCP by compressing text files and elements (for example images, nodes, background images). Here compress means that the files and elements have to be shortened and lightened. When you reduce the size of elements then the transfer between browser and server will be quick and easy.

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