Chrome 148 DevTools ships several notable updates: the full-page accessibility tree is now the default view in the Elements panel (removing the legacy breadcrumb tree), the DevTools MCP server/CLI reaches v0.24.0 with Chrome extension debugging, WebMCP tool calling, and a new Lighthouse 'Agentic Browsing' audit category. Speculative loads debugging gains text filtering, HTTP status codes for failed attempts, and form submission trigger display. A new Crash reports section in the Application panel shows detailed context grids. The Styles tab now supports name-only @container queries and auto-collapses non-contributing sections. The Network panel adds a Request # column and CrUX-based recommended throttling presets. Ad provenance tooltips in the Elements panel explain why elements are tagged as ads via script ancestry or filter list rules.
Table of contents
Dev Tools for AgentsFull accessibility tree by defaultCrash report contextName-only @container queriesCollapsed non-contributing sectionsRequest order and recommended throttlingAd provenance in adornersMiscellaneous highlightsSort: