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The web giant — Google brings many updates and in the latter half of 2020, it introduced Core Web Vitals. Core Web Vitals comprise the frontend page experience signals to measure the loading performance (LCP), interactivity (FID), and visual stability (CLS).
As per Google, Core Web Vitals and Web Vitals are the best available signals to measure the quality of user experience across the web. Core Web Vitals apply to all the web pages and each represents a critical facet of the user experience. They also reflect the real-world experience of user-centric outcomes.
Core Web Vitals comprise LCP (Largest Contentful Paint), FID (First Input Delay), and CLS (Cumulative Layout Shift). Here’s a short brief about each Core Web Vital:
LCP: LCP measures the loading performance of the web pages. For providing a good user experience LCP should take place within 2.5sec when the page starts loading.
FID: FID measures the interactivity of the page. Pages should have a 100 ms or less FID for offering a good user experience.
CLS: CLS measures the visual stability of pages and should have 0.1 or less for a good user experience.
Core Web Vitals are one of the critical metrics to deliver a great user experience. Also, there are other web vitals that impact the user experience. Web Vitals such as Time to First Byte and First Contentful Paint both represent vital aspects of the loading experience and also help diagnose issues with LCP.
These frameworks should be designed and engineered to offer a richer, faster, lighter, and computationally cost-efficient experience.
Modern frameworks such as React and Angular have been utilized to build real-time and reactive web frontend applications. They follow the best practices and guidelines for search engine optimization and perform well to offer a rich user experience.
However, the question that still remains is — are these frameworks beneficial to the end-users when we consider the usage of computational resources, storage, and network bandwidth. The future of these JS-based frameworks should be focused on being less memory intensive, less storage space, and using less network bandwidth.
Since the Search Engine giants like Google favors faster web applications with less voracious in network bandwidth, storage, and computational resources. This states the direction of JS-based frameworks that needs to be user-centered and effectively tackle reactiveness and interactivity. They are well prepared to compete against the Core Web Vitals to offer a lighter and faster experience to end-users.
Further, every JS framework should also concern and be sure to focus on these Core Web Vitals and criteria to offer a rich user experience. As the JS frameworks play an important role in offering a faster and lighter experience, websites with a large chunk of traffic coming from Google will have to rethink about their web frontend engineering.
Server-Side Rendering is known to improve SEO performance and SEO-friendly frameworks such as React and Angular are competent enough for SEO and overall performance. Here’s a more detailed guide on Server-Side Rendering and what JS frameworks support such type of rendering.