Gilberto Cocchi

#WebVitals v4 is now available on GitHub including new diagnostic stats like the INP sub-phases (input delay, processing time and presentation delay) as well as the #LongAnimationFrames Entries pointing developers what Script URLs contributed to cause the worst #INP.

Help prioritize the web features you need most → goo.gle/4iVDhCk The WebDX Community Group is launching a direct way for you to upvote features on sites like Can I Use and web.dev to signal demand to browser vendors.

@addyosmani @googlechrome Huge congrats Addy, it has been a real pleasure working with you on Web Platform! Looking forward to continuing working together in the future!

After ~14 years working on Chrome, it's time for a new chapter. When I joined the @googlechrome team, I walked into a group that believed the web could be fast, simple, safe, and a joy to build on. I still believe that today, and I am continually in awe of what the team and the broader web community do every day. My last day with Chrome will be today. After that, I am excited to be moving into a new role at Google. More on that soon. Over the years I have been lucky enough to work with many teams across Chrome on new APIs, performance, DevTools, benchmarks, extensions, automation, and the broader evolution of the web platform. From Core Web Vitals and Lighthouse, to @ChromeDevTools and CDP, to efforts like Speedometer, Interop, Baseline, PWAs, AI, and our collaborations with frameworks and platforms, the constant has been the same: make the web faster, more reliable, and easier to build on. What I will remember most is not any single launch, but the way this team builds. Listening to users and developers. Measuring. Sweating the details. Making hard calls with empathy. Taking the long view while still shipping with urgency. That culture is the reason Chrome has had the impact it has on the ecosystem. To everyone in the @ChromiumDev and web community I have had the chance to work with: thank you. Thank you for the trust, the feedback, the late nights, the careful reviews, and the countless ways you pushed the platform and its tooling forward. It has been a privilege to learn from you and to build alongside you. I will still be cheering for Chrome and for the open web. If we have worked together or share an interest in the future of the web, AI, and developer experience, I would love to stay in touch as this next chapter begins.

🔧 Let your coding agent identify and fix INP issues for you → goo.gle/3IPT2No With Chrome DevTools MCP, your coding agent can measure performance for specific user interactions to find and resolve slow UI responses - on its own with the help of the browser!

The wait is over! CSS container queries are now Baseline Widely available. 🤩 Find your Baseline target and know what features your users are ready for. Share your result with #WhatsMyBaseline → goo.gle/whats-my-basel…

What new web features are your users actually ready for? Stop guessing. 🔮 Baseline helps you make data-driven decisions, so you can ship the right features at the right time. Learn more and find your target with #WhatsMyBaseline → goo.gle/whats-my-basel…

Ever wonder what goes on Behind the Scenes at #GoogleIOConnect? Get an insider look with Chrome DevRel Lead @Paul_Kinlan! Watch now for his major takeaways from Berlin ⬇️

@localhost_droid I didn't know Garlic sauce exist at all in Italy to be honest, was it good?

@gilberto_cocchi They ignored me twice then I asked a third time before they brought it with an angry face 😔

Ur boy went to Italy with higher expectations on their pizza but ended up asking chilli and garlic sauce 🤣🤣🤣🤣 sorry @gilberto_cocchi

Context: github.com/googleads/goog…

Web Interstitials from GPT/AdSense SDK no longer prevents BFCache thanks to a recent fix from the GPT team. Sites using these interstitials may experience a BFCache hit increase as the BrowsingInstanceNotSwapped blocking reason from GPT/AdSense has been resolved.

@argyleink This is crazy...how the hell this happened?? I am so sorry for this...I sincerely wish you the best...

G̶o̶o̶g̶l̶e̶r̶… ex-Googler. nerdy.dev/ex-googler

Chrome 133 simplifies tooltips with popover="hint" → goo.gle/43cS7ym Discover how Chrome's new popover="hint" creates a separate stacking context for ephemeral UI, reducing dev effort and maintaining design flexibility. No more menu clashes!

Dive into recorded performance profiles with AI assistance in Chrome DevTools to optimize your website. Get helpful assistance in understanding performance profiles, quickly identify and fix code slowing down your site. Learn more here: goo.gle/3CwIsrL

LCP and INP are part of Interop 2025!!!! #core_web_vitals" target="_blank" rel="nofollow noopener">web.dev/blog/interop-2… Will be fantastic to see broader browser support for the underlying APIs needed to calculate these metrics. At the moment there is a big blind spot when only Chromium-based browsers can measure these fully.

🧠 Test your skills with the mind-bending I/O puzzle today. Share your milestones with #GoogleIO and save the date for the event. Learn more → goo.gle/io2025-x

🚀 How QuintoAndar reduced INP by 80%, increasing conversions by 36% We've just published a new article detailing all the work we did in web performance and react optimizations at @quintoandar. I'm really proud of this effort and learned a lot. → link: web.dev/case-studies/q…

@kurtextrem Great idea, I was thinking about that, it's only not easy to implement it right. I would personally love to add this logic to Quick link that is reducing undesired Pretenders while scrolling fast but I never found free time to do it...

@gilberto_cocchi If prerendering works for the first 4 tiles that great on mobile, why don't they prerender or prefetch based on viewport when a user doesn't click on the first 4 tiles?

Great to hear about new business stories being published about how leading firms such as #RayBan from Luxottica takes advantage of #SpeculationRules #Prerender on Chrome to double their conversion rate while improving LCP and other CWV metrics! web.dev/case-studies/r…

RayBan managed to achieve 50% of CrUX counted Navigation Types accounted to Prerender Type on Desktop. I believe that this pattern is pretty common among Ecommerce sites using MPA, take a look at your PLPs and consider optimize them!

Bonus: RayBan also unlocked BFCache and measured the impact of Prerender by using CrUX Navigation Types (you can check it out by using cruxvis.withgoogle.com). High % of backforward and little of zero bfcache => opportunity worth focusing!