Through our SEO Agency Optimize 360
on the theme : Technical SEO
In the world of Search Engine Optimisation (SEO), performance indicators are crucial for evaluating and improving the effectiveness of your actions.
One of the most important aspects to take into account is theuser experienceThese include the speed and fluidity with which your site or application loads and reacts to user interactions. FID, or First Input Delayis an essential criterion for measuring this type of performance.
In this article, we will explore in detail the definition of this indicator and how it can help you optimise your approach to SEO.
First Input Delay, or FID, is a measure of how long it takes for a web page to respond to the first user interaction, such as clicking on a link, pressing a button or using a form control.
It is therefore an indicator of speed, but also of the quality of the user experience offered by your website. The lower the FID, the better the overall impression the user will have and the greater the likelihood that they will stay on your site and interact with other elements and pages.
SEO is not just about achieving good positioning in search results, but also about ensuring that visitors find the information or services they are looking for quickly and efficiently. A poor user experience, particularly in terms of speed, can result in a bounce rate on your site and drive users to find alternatives with your competitors.
What's more, Google recently introduced DIF as one of the key indicators in its signal Web Vitalswhich takes into account several factors linked to the quality of a web page, such as its loading speedand its responsiveness to user interaction and visual stability.
SEO professionals therefore need to be concerned about FID in order to optimise their site, not only to offer a better user experience, but also to meet the requirements of search engines and improve their ranking in the SERP (Search Engine Results Page).
To accurately assess your site's First Input Delay, we recommend using specific tools dedicated to this function, such as :
Le JavaScript is often responsible for slow web pages and high FID. This language can monopolise device resources during processing, preventing the page from responding quickly to user interactions. To solve this problem, here are a few things you can do:
async
) or postponed (defer
), to minimise their impact on the initial rendering of the page.Like JavaScript scripts, excessive file sizes CSS and images can also impact your site's performance and increase FID. Don't hesitate to :
Using custom web fonts can give your site a unique look, but it can also lead to performance problems if they are not properly optimised. Consider :
font-display : swap
which lets you quickly display text in a substitute font while the custom font loads in the background.By applying these tips and bearing in mind the importance of FID for the overall user experience and search engine performance of your website, you are well on the way to optimising your SEO strategy and achieving the highest possible quality for your visitors.
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