Jecelyn Yeen 🐟

Principal Software Engineer. Ex-Googler. Ex-Chrome. 👩‍💻🇲🇾🤿

[Jecelyn Yeen 🐟 @jecfish]

Happy New Year! 2025 is the year of #WebDriverBiDi. You might not use it directly (but via testing frameworks), but it has a real impact on the testing ecosystem.

[Chrome for Developers @ChromiumDev]

Follow along with @jecfish as she shows you how WebDriver BiDi supercharges cross-browser testing 🧪 Learn how this browser automation can help with mock network requests and monitoring console events ▶️ https://t.co/TiNXQyZpJV

[Jecelyn Yeen 🐟 @jecfish]

@thepanta82 @ChromeDevTools The Changes panel is what you need. https://t.co/lNKKv046ya

[Jecelyn Yeen 🐟 @jecfish]

Good news for those of you who prefer to keep classic #ChromeDevTools color scheme. We added a setting to let you customize that via Settings > Preferences > Match Chrome color scheme.

[Jecelyn Yeen 🐟 @jecfish]

Want to know if your redesign actually improved user experience? See real-world performance data with Chrome UX Report! Compare your production (old) and new designs to measure the impact.
@tunetheweb #webperf #ChromeDevTools

[Chrome DevTools @ChromeDevTools]

🥱 What to do when your teammate's asleep but the code's gotta be fixed? Watch to find out: https://t.co/phZDcBATFq

@matthiasrohmer @jecfish #DevToolsAI #CSS #webdev #debugging

[Jecelyn Yeen 🐟 @jecfish]

@dpandiyan Landed a fix, but the cache needs sometimes to populate. Meanwhile, this is the video! https://t.co/v5xSAO5Qds

[Chrome DevTools @ChromeDevTools]

Performance you say? Join Captain Speedy to learn how to pinpoint & fix performance issues with cool insights in #ChromeDevTools. Let’s dive in! 📺 https://t.co/QL9o5VaZtJ

@tunetheweb @jecfish @malchata #DevToolsTips #webperf

[Chrome for Developers @ChromiumDev]

Debugging LCP issues just got easier!

Join @jecfish and @tunetheweb as they explore the revamped Performance panel landing page in Chrome DevTools, packed with features to optimize your website's performance.

See it in action → https://t.co/ymm9VkvByo

#DevToolsTips

[Jecelyn Yeen 🐟 @jecfish]

🐌 Is your LCP dragging down your page speed? Learn how to use Chrome DevTools to find it! New video in 2 days with a full fixing guide.
@tunetheweb #webperf #ChromeDevTools

[Jecelyn Yeen 🐟 @jecfish]

Captain DevTools 👩‍✈️👨‍✈️😎

[Chrome DevTools @ChromeDevTools]

Mayday! Mayday! We need a CSS hero to save our flight! 🛩️ (Spoiler: it involves a lot of frustrated yelling 😂) Watch and find out:
https://t.co/QioD46Rr5i

#codinglife #CSS #DevToolsAI @matthiasrohmer @jecfish

[Jecelyn Yeen 🐟 @jecfish]

@daisuke @matthiasrohmer こんにちは！ご連絡ありがとうございます。

AI機能は現在、英語でのみご利用いただけます。これらの機能はまだ実験段階にあり、チームは機能の改善に取り組んでいますが、他の言語への展開はまだ検討していません。近いうちに実現することを願っています！

[Jecelyn Yeen 🐟 @jecfish]

🤨 How to filter & copy only listed CSS & JS URLs in Network panel? Hold the Cmd/Ctrl key and …. #ChromeDevTools

[Chrome DevTools @ChromeDevTools]

New YouTube Short! 🔥 @jecfish and @matthiasrohmer are up to something... 👀https://t.co/3hPdnE3PKp

#DevToolsAI #ChromeDevTools #CSS #webdev

[Jecelyn Yeen 🐟 @jecfish]

Well, it works (fast) on your machine, not mine @tunetheweb !

Watch our latest video to learn how to monitor Core Web Vitals with #ChromeDevTools.

📺 https://t.co/f33Pw2tvlh

[Jecelyn Yeen 🐟 @jecfish]

2 neat features to improve network debugging in the Performance panel. #ChromeDevTools

💈 Hover to view critical network information upfront
🕵‍♀️ Click Cmd + F to search

Less context switching, better focus. @tunetheweb

[Jecelyn Yeen 🐟 @jecfish]

@Kevin34755400 Yes, you can use the Puppeteer Replay CLI and library to do so. In fact, you can extend and customize them too!

Here's how
https://t.co/K0hbJza6Is

[Jecelyn Yeen 🐟 @jecfish]

These are the 5 cool things you can do with the new AI Assistance in #ChromeDevTools.

Give it a try and let us know what you think: https://t.co/rDpazLLCXR

[Jecelyn Yeen 🐟 @jecfish]

🚀 It's out! Debug & fix CSS with the new AI Assistance panel in #ChromeDevTools.

Here is an example of how we can ask AI to fix our CSS animations - making the eyes blink ⭐️

Update your Chrome today and pair program with #GoogleGemini!

[Jecelyn Yeen 🐟 @jecfish]

@kennethrohde @ChromeDevTools It will land in Chrome 132.

[Jecelyn Yeen 🐟 @jecfish]

@hdjirdeh All the best Houssein!