Placeholder
A placeholder is a temporary visual element, such as a loading spinner or a gray "skeleton" box, that is displayed on a page while the final content is being loaded in the background. Placeholders improve the user experience by providing immediate visual feedback and can help prevent Cumulative Layout Shift (CLS) by occupying the space that the final content will eventually fill. Speed Kit can be configured to show placeholders for dynamic content areas before the Merge occurs.
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.