p75 (75th Percentile)
The p75, or 75th percentile, is a statistical measure representing the point at which 75% of a group of values fall at or below. When analyzing web performance, if the p75 LCP is 2.5 seconds, it means that 75% of your users experienced an LCP of 2.5 seconds or faster. Google uses the p75 value from the CrUX dataset as the official metric for assessing Core Web Vitals. This ensures that a large majority of users have a good experience, without the overall score being overly skewed by a small number of users with extremely slow connections or devices.
Related web performance terms
- Page Load
Page Load refers to the entire process of a webpage becoming visible and interactive for a user, from the initial navigation request to the final rendering of content.
- Page Views (PIs)
Page Views is a metric that counts the total number of times a page on a website has been loaded or viewed by users. It is a fundamental measure of traffic and engagement.
- PageSpeed Insights (PSI)
PageSpeed Insights is a free tool from Google that analyzes the performance of a single webpage and provides suggestions for improvement.
- Passthrough Mode
Passthrough Mode is a temporary, protective state that Speed Kit enters when its Deployment Detection mechanism identifies a major website update.