P

Passthrough Mode

Passthrough Mode is a temporary, protective state that Speed Kit enters when its Deployment Detection mechanism identifies a major website update. In this mode, requests from the user's browser are sent directly to the Origin Server, bypassing Speed Kit's caches. This provides a safe time window for the site's backend infrastructure to complete the deployment and stabilize before Speed Kit begins the process of revalidating its caches with the new content.

Fabian Krumbholz
April 8, 2026
1 min read
GET STARTED

Get a free preloading demo for your site

We analyze your website speed, identify web vitals issues, and compare your competitors.

Book free demo
iPhone 15 Device CheckLaser Scanner