Web speed and Core Web Vitals: what they are and why they matter

In 2026, the loading speed of your website is no longer just a matter of user experience: it is a direct factor in Google positioning. A slow site loses visitors, loses conversions, and loses positions in search results. Core Web Vitals are the metrics that Google uses to measure whether your website offers a good experience, and understanding them is key for any business with a digital presence in Uruguay.

Why does loading speed matter so much?

Google studies show that if your site takes more than 3 seconds to load on mobile, 53% of users abandon before seeing anything. Each additional second of loading reduces conversions by 7% to 20%. In a market like Uruguay, where digital competition grows every year, having a slow website is literally giving away clients to your competition.

What are Core Web Vitals?

Core Web Vitals are a set of metrics defined by Google that measure the actual user experience when loading a web page. Currently there are three:

LCP (Largest Contentful Paint)

Measures the time it takes for the largest visual element on the page (usually a featured image or the main block of text) to appear. The ideal threshold is for it to occur in less than 2.5 seconds. A bad LCP (more than 4 seconds) means that the user waits too long to see the main content.

FID/INP (Interaction to Next Paint)

Measures the responsiveness of the page to user interactions: clicks, taps, keyboard. The INP (which replaced the FID in 2024) must be less than 200 milliseconds to consider himself good. A website that "crashes" when clicking a button has a bad INP.

CLS (Cumulative Layout Shift)

Measures the visual stability of the page during loading. Have you ever tried to click a button and suddenly the content moved and you ended up clicking on something else? That's a Layout Shift. The ideal CLS is less than 0.1. One of the most common causes in Uruguay is images without defined dimensions and ads that appear dynamically.

"Google no longer only measures how relevant your content is: it measures whether your website offers a good experience to the user who visits it."

How to measure the Core Web Vitals of your website

Google offers free tools to measure the performance of your website: PageSpeed ​​Insights (analyzes any URL and gives a score from 0 to 100 for mobile and desktop), Google Search Console (shows Core Web Vitals history of your entire site with real user data) and Chrome DevTools (for detailed technical analysis). A PageSpeed ​​score greater than 90 is considered excellent.

The most common causes of slow websites in Uruguay

• →

  Images uncompressed or in JPEG/PNG format when they should be WebP or AVIF

• →

  Slow or shared hosting with many other sites (cheap hosting)

• →

  WordPress with too many active plugins or themes with inefficient code

• →

  Blocking third-party scripts (misconfigured Google Analytics, chat bots, network pixels)

• →

  Web fonts loaded without preconnect or without font-display:swap

• →

  No cache configured on server

How to improve the speed of your website

• →

  Convert all images to WebP format and define their dimensions explicitly in the HTML

• →

  Use native lazy loading for images that are outside the initial viewport

• →

  Choose a hosting with good infrastructure or migrate to a CDN

• →

  Minify CSS, JavaScript and HTML

• →

  Implement cache on the server and Gzip or Brotli compression