> ## Content Index
> Fetch the complete content index at: https://www.adlingo.org/llms.txt
> Use this file to discover other available public pages before exploring further.

# CrUX Web Vitals
- URL: https://www.adlingo.org/glossary/crux-web-vitals/
- Published: 2026-11-06T02:48:15.000Z
- Updated: 2026-11-07T03:58:29.000Z
- Description: Google’s Core Web Vitals (Largest Contentful Paint, Interaction to Next Paint and Cumulative Layout Shift) as measured in the Chrome User Experience Report (CrUX), a public dataset of real-user data from Chrome, reported at the 75th percentile over 28 days.
- Author: Travis Lusk
- Tags: Programmatic, #glossary

Google’s report card for how your pages feel to real people. CrUX collects performance data from actual Chrome visits over the last 28 days and grades three things. 

- How fast the main content loads (LCP, good is 2.5 seconds or less).
- How fast the page responds when someone taps or clicks (INP, 200 milliseconds or less).
- How much the layout jumps around (CLS, 0.1 or less).

Hit all three on 75% of visits and you pass. Google uses the results as a search ranking signal. 

Here’s the ad tech problem: [Header bidding](https://www.adlingo.org/glossary/header-bidding/) [wrappers](https://www.adlingo.org/glossary/wrapper/), heavy ad tags and late-loading ad slots drag down all three. An ad that shoves the article down the page is a CLS hit. A wrapper hogging the browser is an INP hit. 

Reserve space for your ad slots, trim the tag stack and check your CrUX numbers in [Search Console](https://www.adlingo.org/glossary/search-console-insights/) every month.