Journal/Performance

How Fast Should Your Website Be? Core Web Vitals Explained Without the Jargon

LCP, INP, CLS — three acronyms that decide whether Google sends you traffic. Here's what they mean in plain language, and what the numbers should look like.

March 25, 2026·5 min read·LumenBLU Studio

Google grades every website on three speed and stability metrics called Core Web Vitals. Hit the targets and you get a quiet ranking boost. Miss them and you get a quiet penalty. Most El Paso websites are missing — which is good news if yours isn't.

LCP — how fast the main thing loads

Largest Contentful Paint. The moment the biggest visible element finishes loading. Target: under 2.5 seconds. Anything over 4 seconds is failing.

INP — how fast the page reacts to you

Interaction to Next Paint. Click a button, tap a menu — how long until something visibly happens. Target: under 200 milliseconds.

CLS — how much the page shifts while loading

Cumulative Layout Shift. That annoying moment when a button jumps and you tap the wrong thing. Target: under 0.1.

If you don't know your numbers, run your URL through PageSpeed Insights. If you're in the red, you have a fixable problem — and a competitive opening.

If you run a service business in Northeast or Central El Paso and your website hasn't kept pace with the work you actually do, we should talk. LumenBLU takes on six engagements a year — call (915) 330-5956 or begin a project from the contact page.

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Ready to bring this level of thinking to your own site?

(915) 330-5956