What’s new in DevTools 139-141 @ChromeDevs
What’s new in DevTools 139-141  @ChromeDevs
Uploaded October 2025 | Updated September 2026, 2 weeks ago
Let’s dive in~ Explore the latest DevTools features in Chrome 139-141 with Matthias!

Chapters:
0:00 - Introduction
0:35 - Network Panel
1:34 - Baseline & CSS
2:52 - AI innovations

Resources:
Multi-page view transitions are here → https://goo.gle/io25-view-transitions
Network conditions panel → https://goo.gle/46DHm8z
Style panel → https://goo.gle/4nj0uQn
Baseline → https://goo.gle/3I9Uc6n

What’s New blog posts:
141 → https://goo.gle/48bFl5Q
140 → https://goo.gle/4gTTLdd
139 → https://goo.gle/4gUt206

Watch more What's New in DevTools → https://goo.gle/NewInDevTools
Subscribe to Chrome for Developers → https://goo.gle/ChromeDevs

#ChromeForDevelopers #Chrome

Speaker: Matthias Rohmer
Products Mentioned: Chrome, Chrome DevTools, CSS
What’s new in DevTools 139-141Reshaping user authentication and identity verificationFix markdown image syntax with AI and JSON schemas #GoogleIOYour mental model for AI testing: evals, LLM judges, and test layeringWhat is FedCM and how does it improve online privacy?Emulate device capabilities with Chrome DevTools for agentsBuilding a VR Assistant and llms.txt widgetWhack-a-Mole in your browser - Is it possible!?The Butterfly Effect: Dev EditionDesign your AI evalsExplain like I’m 5: WebMCP editionHow biometrics relate to passkeys
Chrome for Developers |

What’s new in DevTools 139-141

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