Hi, I'm Patrick, a product manager on the Edge team at Microsoft. I do developer relations, and work on a wide range of web platform technologies and tools. Previously, I worked at Mozilla, on the Firefox DevTools team.
I'm part of the Open Web Docs governing committee and a co-chair of the W3C WebDX community group. I also run DevTools Tips.

I have 20+ years of working experience with the web and have worked as a designer, web developer, software engineer, browser engineer, engineering manager, and product manager.

To get in touch, use the links to my social networks at the bottom of this page, or email me: patrickbrosset at gmail dot com.

What's missing in CSS layout

An interpretation of the pain points and missing features which developers face with CSS layout, based on the 2025 State of CSS survey and a mini survey I ran on social media.

Missing CSS

Install web apps with the new HTML install element

A blue rounded button with the text 'Install' and a download icon.

Monitor and improve your web app’s load performance

large web applications are often assembled from many independent pieces, which all load their own data and resources. When all these pieces compete for the same network connection, congestion can build up and the user experience can suffer. On the Edge team, we're proposing the Network Efficiency Guardrails feature to help web developers monitor and optimize their web app's load performance.

App loads resources, then violations are reported, then the developer optimizes their site, then the app loads faster.

wf - The web-features CLI

A command-line tool for looking up web platform features. Search by keyword, check Baseline status, find MDN docs, specs, browser bugs, survey results, and more, from your terminal.
Repo, NPM.

Output of the wf command, showing a feature's name, description, baseline status, docs, and bugs.

The CSS shape() function

Morphing star shape using clip-path and the shape() function

A rainbow colored star shape.

History of the Web (BlinkOn 21)

I helped moderate a fun and engaging discussion panel about a slice of the history of the web at BlinkOn. For the first ever BlinkOn hosted by Microsoft, we wanted to focus on the times in-between IE and the Chromium-based Edge. Brian Kardell and I had the opportunity to welcome three guests who were at Microsoft during that time, and who had a lot of interesting stories from back then: Michael Champion, Greg Witworth, and Ade Bateman. We talked about the state of the web in the early 2000s, the challenges of that time, and the eventual switch to Chromium.

The panel, on stage at BlinkOn 21. From left to right: Michael Champion, Brian Kardell, Greg Witworth, Ade Bateman, and myself.

Improving the experience of developing for the web, one feature at a time (FOSDEM 2026, Brussels)

As developers, we rely on open source data, sometimes without even realizing it. Imagine your job without reliable browser compatibility data, or without CI or debugging tools that understand the features you're using and the browsers you target. That would be a pretty bad experience. In this talk, I dive into the browser-compat-data, web-features, and Baseline projects, and show how they shape our experiences as developers. Talk description, slides, video recording.

Title slide of my talk, which is 'Improving the experience of developing for the web, one feature at a time', with he FOSDEM logo.