facebook What Is Interaction To Next Paint (INP) & Why Crucial For Online Business?

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What Is Interaction To Next Paint (INP) And Why Crucial For Online Business?

The current period of digital marketing regularly introduces new updates as per the demand of users. While having a website is mandatory, what matters most is its responsiveness to provide the best user experience. Therefore, they must have a website that loads quickly, is fully optimized, and has an engaging interaction with the visitors.

All these things, whether your website has or not, can be determined with the help of core web vitals. Among these core web vitals, one major metric that is going to be introduced in March 2024 is the Interaction with Next Paint. Through this, web developers can easily analyze the website's performance.

Here, we are going to list all the important details that users need to know regarding Interaction with Next Paint. Along with that, we will briefly discuss the core vital web metrics. Through this, the user will have the required information to optimize their page experiences and enhance their website ranking. Read this blog post till the end to get more insight about Interaction to Next Paint.

What Are Core Vital Web Metrics And How Are They Useful In SEO?

The web vitals are the metrics based on which the page experiences of any website can be determined. The web vitals comprise many subsets. Among these, the major ones and the most essential through which the actual performance of the webpage is analyzed are also called Core Web Vitals. The core web vitals are the major contributors to determining the actual Google Page score. Currently, the core web vitals comprise three major metrics, which are listed below:

Largest Contentful Paint (LCP)

The Largest Contentful Paint determines the time taken to load the largest element (image or text block) in the page visible within the viewport. Different elements based on which the LIP metrics are determined include image or video elements and CSS Gradients.

Cumulative Layout Shift (CLS)

This metric determines the layout shift score of the largest burst occurring during the entire lifespan of a page. For the page to be effectively responsive, the CLS score should be less than (0.1).

First Input Delay (FID)

The First Input Delay is the time gap between the first interaction of the user with your webpage (like clicking a link or any image) to the time when the browser responds to that interaction made by the user. The FID metrics are the determination of the impression in front of the user interacting with your website. The ideal parameter of the First Input Delay should be less than 100 milliseconds.

The above-mentioned three are the Core Web Vital metrics, which collectively can determine the responsiveness of the website. A new core web vital element has been introduced (Interaction to Next Paint). This web element will replace the First Input Delay. To know more about this INP core web vital elements, read further section. Through this, you have an idea of what exactly it is and how you can optimize your website accordingly.

You may also read: Google Will Replace FID With INP As A Core Web Vitals Metric In March 2024

Interaction To Next Paint (INP)

The Interaction to Next Paint (INP) is a Core Web Vital metric. It is going to replace the First Input Delay to help the user analyze their page performance more efficiently. Explaining INP in simple terms, it analyzes the delay in responding to all the interactions. This includes clicks, keyboard interactions, and all the interactions that happen throughout the lifespan of a visit to a page. The resulting INP value will be the longest interaction observed while visiting the page.

How INP will be helpful can be explained very simply because how well the page responds to the users' queries will ultimately contribute to creating an impression in front of users.

What Exactly Is A Good INP Score?

The responsiveness of the page is classified into three categories which are Good Responsiveness, Needs Improvement, and Poor Responsiveness. This can be determined based on their INP score in terms of milliseconds. Any page with a low INP score can be considered to be highly responsive and thus have better chances to gain high-ranking factors.

Any webpage having an INP score between 0 and 200 milliseconds will be considered to have good responsiveness.

If the INP score lies between 200-500, it means that the webpage needs some improvement in terms of responsiveness.

Poor responsiveness will be displayed when the INP score goes above 500.

While the page responsiveness can vary based on the user's devices and many other factors, the actual INP value will be the 75th percentile. While checking an INP, the following interactions are considered:

  • Mouse click.
  • Tapping is made by the user while accessing the webpage through a touchscreen.
  • Pressing a key on the Keyboard or scrolling a key or hovering through it.

How INP Is Better Than First Input Delay (FID)?

The Interaction of Next Paint will be replacing the First Input Delay as a vital core web metric. While First Input Delay is an important parameter determining page responsiveness, the INP can be considered a better option to analyze any website responsiveness.

To explain it more simply and far better, the FID determines the page responsiveness based on the first interaction that any user makes, while INP indicates the delay observed in all the interactions made on the page during the whole span of their visit.

INP is a core web Vital metric that can be determined whenever a user makes an interaction while visiting a web page. However, under certain circumstances, the INP will not be determined:

  • Whenever a page has been loaded, no such actions can indicate an action has been observed, like clicking anywhere, tapping with a touchscreen, or pressing any key on the keyboard.
  • The only action observed is that scrolling or hovering through the mouse does not contribute to calculating the INP of a website or a webpage.
  • In case a page has been crawled by a bot, like being indexed or through a browser that has been scripted not to make any interaction.

How To Calculate INP?

Different tools are available for users through which they can calculate the INP metrics. Major ones include Chrome Lighthouse, Google Page Insight (for core web vitals elements), and many tools offered by third parties. Through these tools, you can easily get the INP value along with the reports indicating various other vital core web elements.

However, what is more important for the user is to understand how the INP is calculated. For INP, two kinds are available for the users: lab data and field data. The Lab Data indicates website performance in a controlled environment under predetermined factors like network, connectivity, and device performance. On the other hand, the field is the data obtained from real-time user monitoring. The field data is considered the best available source for the user to determine the interaction with Next Paint and other vital core web elements.

Various Ways To Optimize Interaction To Next Paint

INP or interaction with next paint is an important factor from the SEO points as it determines the page responsiveness and how engaging a webpage can be. Therefore, it is really important to take various measures in case a website or webpage has an INP score of more than 200 milliseconds. Some of the common measures through which you can optimize the INP metric for your website have been listed below:

Use The Field Data To Detect The Slow Interaction On The Webpage

Field Data is highly crucial not only in determining the core web vital metrics of a page but also through field data, and users will be able to identify where the performance of their webpage is lagging. Through the help of the field, users can easily check out that, particularly where the interaction has been responsible for a high INP value.

Remove Unnecessary JavaScript Or CSS

Script Evaluation is one of the first things done while loading a page in a browser. Once the file has been fetched from the network, the browser parses the script, makes sure it is error-free, and compiles it only after it executes it. While a script size can be large, this might delay the browser from responding to other interactions.

Therefore, to increase the page interactions, you can either reduce the number of JS files or minify them (reduce their size). For that, various tools are available online.

Prefer Using A Content Delivery Network (CDN)

One of the best options through which you can ensure that the multimedia components of the webpage do not slow the loading speed of the website is to use a content delivery network.

What exactly is a content delivery network? It is a group of servers interconnected geographically. Through this CDN, it will be possible to serve a webpage loading from multiple locations from which different components can be picked, hence making it easy to load.

Do Not Engage With Layout Thrashing

Layout refers to the process where the browser determines the size, shape, position of the webpage, and other geometric aspects related to various elements of the webpage. Whenever there is a situation of repeated synchronous layout, this will be the case of Layout Thrashing. The main reason behind that is the constant updates in the Javascript Styles.

Therefore, it is recommended for the users to avoid layouts wherever possible.

Caching Plugins

To understand better what a Caching Plugin is, you need to understand what exactly happens whenever the user opens a webpage in their system for the very first time. Whenever you load a webpage for the first time on any device, the browser of that device requests for various elements of your page from the server, which include HTML, CSS, and JavaScript.

Now, this is where the Caching Plugins come into play. Whenever the user loads the page, these plugins store and save some of the information related to that page in the form of a cache. So, the next time the user visits that page again, some of the elements will be fetched from the system, making it easy for the page to load faster.

The user running their website through the help of a content management system (CMS) can easily use these cache plugins. This might help them improve the performance of their webpage.

Optimize The Third Party Codes On Your Website Or Eliminate Them

By third-party code, we here refer to any element that is related to any third-party website. This comprises their code element, like links or codes referring to other actions. A common example of these third-party codes includes Social Media sharing options, comments section, or different ads. All these elements might reduce your webpage speed significantly, or taking action on them will heavily affect your website performance.

Try To Keep The DOM Size To Its Minimum

DOM, or the Document Object Model, refers to the structural layout of the website. It represents the elements of the webpage in the form of a tree. Each node of the tree represents each element used in that document/webpage.

A large DOM size can somehow influence the browser's ability to load the page more effectively. As per the Chrome Lighthouse stats, the DOM of any webpage having more than 1400 nodes will be considered excessive. Also, any Chrome UX report will give a red flag if it goes more than 800 nodes.

Optimize Various Media Elements (Images, Videos)

The major components that anyone can easily detect reducing the web page load speed are the images. The utilization of various media elements like images and video delivers attractive content and is helpful in engaging customers. However, it might affect your page impression from a technical point of view, i.e., reduce your page load speed.

Any page loading slowly can automatically encourage the audience to opt out of it and look out for another source. Hence, increasing your bounce rate might also contribute to affecting your ranking on any search engine. Measures available for the users to tackle this include either removing the images or optimizing them by minimizing their size so that they can load easily and faster.

Various content management Systems like WordPress, Drupal, and many others offer different plugins. Through this, users can easily optimize images and other media elements on their pages.


The Interaction to Next Paint is going to be a core web vital metric. It will provide crucial data on how fast your website can perform. Taking various measures to optimize your INP score will also be a contributing factor to enhancing your website’s ranking on a search engine and your online presence. The INP and other core web vital metrics include some technical aspects. This might become difficult for various users to understand. All they can do is keep in mind that their website should be created or optimized in such a way that it can load faster and will be able to engage the customer through its interface.