[Chemical Knowledge]：What is LCP?

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As more and more businesses move online, it becomes increasingly important to ensure that your website loads quickly. The page loading speed is directly related to the user experience, SEO ranking and other factors, so more and more companies began to study the web performance optimization related indicators. One of the most important indicators is the LCP. What is

LCP?

LCP(Largest Contentful Paint) refers to the time when the maximum content in the page is drawn. Simply put, when the largest image, video, or text block is visible after the page starts loading. It reflects the point in time when the user first interacted with the page. LCP can help you understand which elements are the most time-consuming in the entire loading cycle of the page and give corresponding optimization suggestions.

Why is LCP so important in web page performance optimization?

Usually, users will only wait for a few seconds for the page to load, and too long a wait will lead to loss of users. If your page takes too long to load, the user experience will be greatly reduced, which will affect factors such as your website traffic and conversion rate. In addition, in order to optimize the user experience, Google has also added LCP indicators to the search engine ranking algorithm. So, if you want to improve your SEO ranking, LCP metrics will become one of the essential factors. How can

improve LCP? To improve LCP in

, we first need to know what will cause LCP to become worse:

1. Introduce larger pictures or videos to

2. Use slow-loading Web fonts or other resources to

3. Server or CDN performance is not good

4. JavaScript execution times are too many or execution time is too long
.
now that we know the reason for LCP, optimization suggestions will naturally emerge. The following are some optimization suggestions that can help improve LCP:

1. Optimize picture and video size

2. Use new picture formats such as WebP or AVIF to

3. Merge CSS and JS file

4. Use non-blocking JavaScript to

5. Establish a more efficient caching strategy

6. Use CDN, optimize server response speed

7. Optimize web fonts to use

8. Avoid introducing other elements during the loading of important elements

LCP is not only a page load time indicator, it is also a key example of website performance and user satisfaction. With the continuous development of the Internet, LCP optimization will usher in more challenges and opportunities. If you want to improve the performance of your website, then improving LCP must be one of the most important optimization directions.