A slow website quietly costs you leads. Visitors who wait for a page to load often leave before they ever see your offer, and Google uses page experience signals when it evaluates sites. Core Web Vitals give you a clear way to measure that experience.
Quick answer: Core Web Vitals are three Google metrics for real-world user experience: Largest Contentful Paint (loading, good at 2.5 seconds or less), Interaction to Next Paint (responsiveness, good at 200 milliseconds or less) and Cumulative Layout Shift (visual stability, good at 0.1 or less). Improving them makes your site feel faster, which supports both conversions and SEO.
The three Core Web Vitals
Largest Contentful Paint (LCP)
LCP measures how long the largest visible element, often a hero image or headline, takes to appear. Aim for 2.5 seconds or less.
Interaction to Next Paint (INP)
INP replaced First Input Delay in 2024. It measures how quickly your page responds when someone taps, clicks or types. Aim for 200 milliseconds or less.
Cumulative Layout Shift (CLS)
CLS measures how much content jumps around while the page loads, such as a button moving just as someone tries to tap it. Aim for 0.1 or less.
Why speed matters for lead generation
- Faster pages keep more visitors on the page long enough to read your offer.
- Paid traffic becomes more efficient because fewer clicks are wasted on people who leave during loading.
- Mobile users, who are often on cellular connections, get a usable experience.
- Good page experience supports your organic rankings.
How to check your scores
- PageSpeed Insights: shows real-user data when available plus lab diagnostics.
- Google Search Console: the Core Web Vitals report groups pages that need work.
- Chrome DevTools Lighthouse: useful for testing changes before you publish them.
Practical fixes
Improve LCP
- Compress and resize images, and serve modern formats such as WebP or AVIF.
- Preload the hero image and avoid lazy-loading it.
- Use quality hosting, caching and a content delivery network.
- Remove unused plugins, scripts and fonts.
Improve INP
- Reduce heavy JavaScript and third-party scripts such as chat widgets and trackers.
- Defer scripts that are not needed immediately.
- Break up long tasks so the browser can respond to input.
Improve CLS
- Set width and height on images and videos.
- Reserve space for banners, embeds and ads.
- Load web fonts with a sensible fallback to avoid text jumping.
Page builders and speed
Page builders such as Elementor make sites easy to edit, but heavy templates and too many add-ons can slow things down. Clean layouts, a lean plugin list and good caching keep builder sites fast.
Key takeaways
- Track LCP, INP and CLS using real-user data.
- Images, scripts and hosting are the most common causes of slow sites.
- Speed improvements help conversions, ad efficiency and SEO at the same time.
Explore our web design and development services.
Frequently asked questions
What are good Core Web Vitals scores?
Google considers Largest Contentful Paint of 2.5 seconds or less, Interaction to Next Paint of 200 milliseconds or less and Cumulative Layout Shift of 0.1 or less to be good.
Do Core Web Vitals affect Google rankings?
They are part of Google's page experience signals. Relevant, helpful content matters more, but a fast, stable site supports rankings and improves conversions.
What slows down WordPress websites the most?
Common causes are large unoptimised images, too many plugins, heavy third-party scripts, slow hosting and missing caching.
Want help putting this into practice? Book a free strategy call with Angeles Marketing, a Toronto digital marketing agency, or call +1 647-739-1798.
On this page
Want help with this?
Talk to a Toronto specialist about your goals. Free and no obligation.
