Largest Contentful Paint: Meaning, Tools & Ways To Improve

Experienced E-commerce Agency for Magento/ Adobe Commerce/ Shopify/ Shopware Development

In the ever-evolving landscape of website optimization, it’s crucial to understand and implement techniques that enhance user experiences. One significant aspect of website performance that directly impacts user satisfaction is the Largest Contentful Paint (LCP).

The Largest Contentful Paint measures the time it takes for the largest visible element on a webpage to load and become fully rendered for users. This crucial metric plays a vital role in determining how quickly users perceive a website’s loading speed and can influence their overall browsing experience.

In this article, we will delve into the meaning and importance of the Largest Contentful Paint, exploring the key elements that contribute to it. We’ll also discuss the best practices and strategies that can be employed to improve LCP and optimize website performance.

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What is the Largest Contentful Paint?

Largest Contentful Paint (LCP) is a vital performance metric measuring the time it takes for the largest visible element on a webpage to render and become fully visible to users. It focuses on the main content users see when they load a page, such as images, videos, or blocks of text.

LCP provides a crucial indicator of how quickly users perceive a webpage’s loading speed. It plays a significant part in determining the overall user experience, as it directly impacts how fast users can interact with and consume the content on a website.

Largest contentful paint meaning

A fast-loading LCP is essential for reducing user frustration, improving engagement, and increasing the chances of users staying on a web page rather than abandoning it due to slow load times.

By optimizing for a faster LCP, website owners and developers can generate a more seamless and enjoyable browsing experience for their users. This can improve user satisfaction, increase conversions, and improve website performance. Understanding LCP and its optimization strategies is crucial whether you’re a web developer, designer, or simply someone interested in improving website speed and usability.

Which is an ideal score for the Largest Contentful Paint?

Less than 2.5 seconds is the best time for the LCP test. It’s crucial to remember that users, devices, and network setups can affect how quickly a page loads. In order to provide the best user experience, achieving a consistently quick LCP in various contexts is essential.

To further understand LCP scoring, it’s helpful to consider the following ranges:

  • Good: LCP under 2.5 seconds

A Good LCP score indicates that the largest visible element on the webpage loads quickly, providing users with a smooth and responsive experience. This range is generally recommended as the target for optimizing LCP.

LCP ideal score

  • Needs improvement: LCP between 2.5 and 4 seconds

An LCP score falling within this range suggests that there is room for improvement in terms of loading speed. While the page may still be usable, users may experience a slight delay in perceiving the main content.

  • Poor: LCP over 4 seconds

An LCP score over 4 seconds indicates a slow-loading webpage, which can lead to a significantly negative user experience. Users may encounter delays in accessing the main content, resulting in frustration and increased bounce rates.

Remember that these are only broad principles and that it’s crucial to consider your website’s particular context and objectives when assessing LCP ratings. To give your consumers a quick and delightful browsing experience, strive to get the greatest LCP performance you can within the limitations you have.

How to determine the Largest Content Paint element?

Determining the LCP element requires analyzing the webpage’s structure and understanding which components contribute most significantly to the visual experience. Here’s a step-by-step approach to identifying the LCP element:

  • Use performance monitoring tools: Utilize browser developer or performance monitoring tools like Lighthouse, PageSpeed Insights, or WebPageTest. These tools provide detailed performance reports that include LCP information.

  • Analyze LCP timing data: Review the LCP timing data provided by the performance monitoring tools. This data will indicate which element is considered the largest and has the most impact on the loading speed.

  • Identify visually significant elements: Once you have the LCP timing data, identify the elements that contribute to the webpage’s overall appearance and user experience. These elements typically include images, videos, hero banners, or large blocks of text.

Determine the LCP element

  • Check the DOM (Document Object Model): Inspect the web page’s DOM structure using browser developer tools. Look for elements with larger dimensions, such as width and height. Additionally, consider elements with substantial visual content that users would immediately notice upon page load.

  • Consider CSS selectors: CSS selectors can help identify specific elements within the DOM. Look for selectors associated with the visually prominent factors identified earlier. This can include class names, IDs, or specific tags.

  • Validate with user testing: Conduct user testing or gather feedback from real users to ensure that the identified element aligns with their perception of the webpage’s largest and most significant content. This step helps validate your findings and ensures that the LCP element aligns with user expectations.

4 test tools to measure Largest Contentful Paint

PageSpeed Insights

Google offers a tool for measuring the performance of websites called PageSpeed Insights. It assesses how well a website works on desktop and mobile platforms. PageSpeed Insights offers tips to enhance the page’s user experience and performance score after entering a URL.

LCP and other essential performance indicators are tracked, including Cumulative Layout Shift (CLS) and First Contentful Paint (FCP). PageSpeed Insights evaluates a webpage’s performance using actual data from the Chrome User Experience Report (CrUX).

Chrome Developer Tools

Chrome Developer Tools is a built-in set of web development and debugging tools available in the Google Chrome browser. It includes the Performance panel, which allows you to analyze a webpage’s loading performance and identify potential bottlenecks.

The Performance panel provides a detailed timeline view of network requests, rendering processes, and other performance events. It enables you to record and analyze loading behavior, including LCP, and provides insights into opportunities for optimization. Developers and designers widely use Chrome Developer Tools for performance profiling and debugging.

Test tools to measure largest contentful paint

Google Search Console

As a free online tool, Google Search Console assists website owners in tracking and improving their site’s visibility in search results. Google Search Console offers a Core Web Vitals report as part of the Core Web Vitals program.

This research gives insights into performance concerns affecting search visibility and emphasizes user-centric metrics, such as LCP. Website owners can view LCP statistics, receive tips for enhancing LCP and other core web vitals, and identify specific pages with poor performance using the Core Web Vitals report.


A free online application called WebPageTest enables you to evaluate and test the functionality of websites. It offers sophisticated testing tools and lets you choose several testing sites, browsers, and connection speeds. LCP measures and other performance indicators are included in the thorough reports offered by WebPageTest.

Using the tool’s waterfall charts, filmstrips, and visualizations, you may better understand the order and behavior of your webpage’s loading. To get in-depth insights into page loading performance and pinpoint areas for optimization, developers and performance specialists frequently utilize WebPageTest.

7 ways to improve the Largest Contentful Paint score

1. Cut down on server response times

  • Optimize server configuration: Configure your server software (such as Apache or Nginx) to handle requests efficiently. Use caching mechanisms like server-side caching or reverse proxy caching to reduce the time it takes for the server to respond to requests.

  • Minimize database queries: Reduce the number of database queries needed to generate a webpage by optimizing your database schema, utilizing efficient queries, and implementing caching techniques.

  • Use content delivery networks (CDNs): CDNs store cached copies of your website’s static assets (such as images, CSS, and JavaScript files) on servers distributed across various geographic locations. When a user requests a resource, it’s served from the nearest CDN server, reducing latency and improving response times.

2. Improve your photography

  • Compress and resize images: Use image compression techniques to reduce the file size of images without significantly impacting their visual quality. Tools like ImageOptim, TinyPNG, or the WebP image format can help achieve smaller image sizes.

  • Lazy loading: Implement lazy loading, which delays the loading of images until they are about to enter the user’s viewport. This reduces the initial page load time by prioritizing loading the LCP element and deferring other images that are not immediately visible.

3. Enhance Javascript and CSS components

  • Minimize and optimize files: Minify and combine JavaScript and CSS files to reduce their size. Minification removes unnecessary characters like whitespace and comments, while concatenation combines multiple files into one file to reduce the number of requests.

  • Leverage browser caching: Set appropriate caching headers for JavaScript and CSS files to instruct the browser to store them in its cache. This allows subsequent page loads to retrieve these files from the cache instead of the server, reducing load times.

  • Asynchronous or deferred loading: Load non-critical JavaScript and CSS files asynchronously or defer their loading until after the page’s critical content has been displayed. Asynchronous loading avoids blocking the rendering of the LCP element, improving the overall page load time.

4. Preload essential materials

  • Identify critical resources: Determine the CSS, JavaScript, or image files essential for rendering the LCP element.

  • Preload tags: Add preload tags to the HTML head section to instruct the browser to fetch and cache these critical resources as early as possible during the page load process. This ensures that the required resources are readily available when needed, improving LCP.

Ways to improve

5. Refrain from using render-blocking CSS and improve CSS delivery

  • Eliminate render-blocking CSS: Identify CSS that blocks the rendering of the LCP element and find ways to eliminate or reduce its impact. This includes prioritizing critical CSS, inlining it within the HTML, or loading it asynchronously.

  • Optimize CSS delivery: Improve the delivery of CSS files by minifying and compressing them, reducing their size. Utilize techniques like lazy loading, asynchronous loading, or deferred loading for non-critical CSS files, allowing the LCP element to render faster.

6. Utilize a reputable web hosting company

  • Server performance: Choose a web hosting provider with optimized server configurations, powerful hardware, and efficient network connectivity. A reputable hosting company ensures faster server response times, contributing to improved LCP.

  • Scalability and reliability: Select a hosting solution that can handle increased traffic and provides a stable hosting environment. A well-managed hosting platform ensures consistent performance and minimizes any potential performance bottlenecks.

7. Resources for compressing text

  • Gzip compression: Enable Gzip compression on your server, which compresses text-based resources (HTML, CSS, JavaScript) before sending them to the browser. Gzip reduces file sizes and improves transfer speed, resulting in faster loading times and improved LCP.

  • Brotli compression: Brotli is a newer compression algorithm that offers even higher compression ratios than Gzip. If your server and clients support Brotli, consider implementing it to further reduce the size of text-based resources and enhance LCP.

You can increase the user experience and overall loading speed of your website while also optimizing the LCP score. Use tools like PageSpeed Insights, Chrome Developer Tools, or WebPageTest to often check the speed of your website and track advancements and spot potential improvement opportunities.


In summary, improving the largest contentful paint (LCP) score is essential for boosting website performance and user satisfaction. The greatest and most significant piece on a webpage must first become visible to the user before LCP can calculate how long it will take. You may greatly minimize perceived loading time and engage consumers more successfully by concentrating on increasing LCP.

You may improve the performance of your website by putting these strategies into practice. A higher LCP score guarantees that users can quickly access and engage with the most critical material, creating a better user experience.

Recall to frequently test and keep an eye on the functionality of your website using programs like PageSpeed Insights, Chrome Developer Tools, or WebPageTest. To further improve your LCP score and give users a wonderful experience, keep analyzing the findings and making improvements as necessary.

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Summer Nguyen
Marketing Manager of Mageplaza. Summer is attracted by new things. She loves writing, travelling and photography. Perceives herself as a part-time gymmer and a full-time dream chaser.
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