Chrome DevTools Protocol (CDP) is the core communication protocol for Chromium browser debugging tools: it's based on JSON format and enables bidirectional real-time interaction between clients and the browser kernel through WebSocket.
On September 23, 2025, Google released Chrome DevTools MCP, currently at version 0.9.0. Google positions it as an assistant for AI coding agents to handle debugging and performance testing, improving web development debug capabilities. See the official blog for use cases: Chrome DevTools (MCP) for your AI agent.
This post analyzes Chrome DevTools MCP's implementation by examining the source code and MCP output, exploring its capabilities and limitations.
Hello everyone, it's been over a year since my blog was last updated. I guess the SEO ranking has dropped completely, and I don't know how many people will see this in the end.
Starting from May last year, due to organizational structure changes at work, I shifted from the performance optimization field to AI. Due to confidentiality agreements, I can't say much about the specific content, so I haven't updated for a long time. This year, my work direction has changed again, mainly focusing on GUI Agent work.
A year has passed, but the programming field has undergone earth-shaking changes. With the launch of tools like Cursor/Claude Code, everyone has basically broken free from the constraints of traditional programming methods (let's not worry about whether the generated code is correct, just ask if it's fast or not); many departments are not satisfied with the efficiency gains from external programming tools and have started building their own internal Agents, attempting to double efficiency in both business and engineering. Since my recent work involves more collaboration with large model teams, I feel this more deeply, and I'll have opportunities to share my insights slowly in the future.
In 2025, discussing RAG (Retrieval-Augmented Generation) technology might not seem particularly fashionable in the rapidly evolving AI landscape. However, from a practical implementation perspective, RAG offers low technical barriers and significant performance improvements. With clear expected benefits, many institutions, companies, and departments are implementing RAG solutions, while researchers continue proposing various optimization approaches to enhance accuracy.
"The sculpture is already complete within the marble block, before I start my work. It is already there, I just have to chisel away the superfluous material." ― Michelangelo
Hello everyone, I am skychx, specializing in performance optimization.
When doing web-related performance optimization, it is necessary to have a certain understanding of the underlying principles of the browser, so that the page can better walk on the happy path. Today, let's understand a browser default performance optimization scheme that is rarely known by people - HTML Preload Scanner, and see how it optimizes the loading speed of network resources.
There are various ways to observe network performance data with the browser's Devtools tool, but these data are presented in different ways. This article is to interpret these performance data presentation methods and make a longitudinal comparison to help more people optimize the performance problems brought by the network.
Due to the open nature of the Web, web front-end engineers often have to struggle with CORS (Cross-Origin Resource Sharing), such as a “SVG Image Font Failure Issue” I encountered before, which was caused by CORS.
A webpage can not only run on public browsers, but also on the WebView component within the APP. Since these Hybrid Web pages run in a relatively closed environment, the APP itself can inject some JS code into WebView, making targeted enhancements to the Web page (the most typical application is JSBridge, which provides a bridge for Web <--> Native communication).
A couple of days ago on "Jike," I spontaneously wrote a brief history of HTTP priority development. I felt it was too rushed at the time, so I decided to write a blog to expand on it, analyzing the concept of "priority" longitudinally to see the development and evolution of these fundamental protocols.