Three questions about how the page feels
Core Web Vitals are Google's attempt to measure something subjective with three numbers. Did the main content appear quickly. Did the page respond when I touched it. Did anything move under my finger while I was reading. That is the whole idea. They matter for ranking, modestly, and they matter far more for whether a visitor stays long enough to become an enquiry. Most B2B sites fail at least one of them, usually the first.
LCP: how fast the main thing appears
Largest Contentful Paint measures when the biggest visible element finishes loading, usually a hero image or a headline. Under 2.5 seconds is good, over 4 is poor, and B2B sites routinely sit far past that on mobile. The usual culprits are an oversized hero image, a font that blocks rendering while it downloads, and a stack of tracking scripts loading before anything a human can see. This is the metric worth fixing first because it is the one visitors actually feel.
INP: whether the page answers you
Interaction to Next Paint measures the delay between a tap and something visibly happening. Under 200 milliseconds feels instant, over 500 feels broken. The cause is almost always JavaScript occupying the browser: analytics, chat widgets, consent banners, carousels and animation libraries all competing on the main thread. A page can score well on loading and still feel dead for a second after every tap, which is the specific frustration that makes people leave.
CLS: the thing that moves as you read
Cumulative Layout Shift measures content jumping around while the page settles. You have experienced it: reaching for a link and hitting an advert because an image loaded above it and pushed everything down. The fix is unglamorous and reliable. Give every image and embed explicit dimensions or a reserved aspect ratio, load fonts so they do not resize the text when they arrive, and never inject a banner above existing content.
Talk to us about your site performance on WhatsAppMeasure the field, not the lab
Running a speed test on your own machine tells you how the site behaves on office wifi on a good laptop, which is not where your visitors are. Search Console reports field data from real Chrome users, split by mobile and desktop, and that is the number Google uses. Check it before you spend a day optimising, because lab scores and real-world experience often disagree, and the disagreement usually means your visitors are on worse connections than you assumed.
What usually fixes most of it
Four changes carry the majority of the improvement on a typical business site. Compress and correctly size images, and serve them in a modern format. Remove tracking and marketing scripts nobody reads the output of. Load anything below the fold only when it is needed. And host the fonts you use instead of pulling them from a third party at render time. None of this is a redesign, which is why it is worth doing before considering one.
Speed is a conversion argument, not an SEO one
Treating this as a ranking exercise undersells it. A visitor who waits four seconds for your homepage has already formed a view about how organised your company is, and B2B buyers comparing three suppliers do not wait on any of them. Fixing performance moves enquiries before it moves position. If your pages are slow because of how the site was built rather than what is on it, that is a structural problem and usually the honest trigger for a website redesign rather than another round of patching. Speed is designed in, which is why it belongs in how a site gets built.
Written by
Idennex
Strategy-first agency, Istanbul