Preconnect
Preconnect is a resource hint (``) that tells the browser to establish an early connection to a third-party domain. It performs the necessary DNS lookup, TCP handshake, and TLS negotiation in the background before a resource from that domain is actually requested. This "warms up" the connection, saving significant time later and improving the load speed of assets hosted on other domains, such as fonts, analytics scripts, or images from a CDN.
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.