Why Prerendered LCP Reads 6.2s Without activationStart
Speculation Rules prerendering folds the whole pre-click wait into raw LCP. I measured a 6244ms vs 103.5ms gap on Chrome 150 and mapped where RUM needs fixing.
Tags
chrome
5 posts
WebMCP's Origin Trial: provideContext Is Already Gone
WebMCP shipped as a Chrome 149 origin trial, but its API already moved: navigator.modelContext is now document.modelContext and provideContext is gone.
WebSockets and bfcache: Chrome 150 Still Said 'websocket'
Chrome 149 said active WebSockets no longer block bfcache. I re-measured on three Chrome 150 builds and notRestoredReasons still returned 'websocket'. Why?
One listener costs you the back button: six bfcache probes
Six pages, one bfcache blocker each, measured on real back navigations with pageshow.persisted and notRestoredReasons. Only unload blocked the restore.
WebMCP: Chrome 146 Turns Your Browser into an AI Agent Tool Server
Chrome 146 embeds MCP server capabilities directly into the browser. Learn how WebMCP works, how AI agents interact with it, and what it means for web development.