Vinicius Dallacqua
@webx.bsky.social
Into browsers and agentic systems.
Engineering QA.tech
Building https://agent.perflab.io
Into film photography and web performance nerd.
Engineering QA.tech
Building https://agent.perflab.io
Into film photography and web performance nerd.
Pinned
Vinicius Dallacqua
@webx.bsky.social
· Apr 2
Hello everyone, I'd like to give you all a quick update on the PerfAgent progress! It's been a wild ride since the inception of PerfLab, from forking DevTools to build a new experience using all of its power and trying to take my owns spin on Performance Tooling for all devs!
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Reposted by Vinicius Dallacqua
I talk often about breaking out of walled gardens, that you don't have to be on corporate-web in order to be on the web.
This is a fantastic article about the problem and how to (pretty easily) fight it. Well worth reading.
Also, @strange.website is a rad human being.
henry.codes/writing/a-we...
This is a fantastic article about the problem and how to (pretty easily) fight it. Well worth reading.
Also, @strange.website is a rad human being.
henry.codes/writing/a-we...
A Website To End All Websites | Henry From Online
How to win the war for the soul of the internet, and build the Web We Want.
henry.codes
February 17, 2026 at 5:49 PM
I talk often about breaking out of walled gardens, that you don't have to be on corporate-web in order to be on the web.
This is a fantastic article about the problem and how to (pretty easily) fight it. Well worth reading.
Also, @strange.website is a rad human being.
henry.codes/writing/a-we...
This is a fantastic article about the problem and how to (pretty easily) fight it. Well worth reading.
Also, @strange.website is a rad human being.
henry.codes/writing/a-we...
I have a 'neuve' side project and I'll start writting more about it here.
This time the writeup brings some of my experience when developing the browsing aspect of, I stopped telling AI agents what to build.
This time the writeup brings some of my experience when developing the browsing aspect of, I stopped telling AI agents what to build.
February 10, 2026 at 8:19 PM
I have a 'neuve' side project and I'll start writting more about it here.
This time the writeup brings some of my experience when developing the browsing aspect of, I stopped telling AI agents what to build.
This time the writeup brings some of my experience when developing the browsing aspect of, I stopped telling AI agents what to build.
What a banger of an article
developer.chrome.com/blog/designi...
Great job by the @developer.chrome.com team and as someone who has been very deep into the codebase and actually saw the evolution written in this article, and extracted it to build PerfAgent
developer.chrome.com/blog/designi...
Great job by the @developer.chrome.com team and as someone who has been very deep into the codebase and actually saw the evolution written in this article, and extracted it to build PerfAgent
Designing DevTools: Efficient token usage in AI assistance | Blog | Chrome for Developers
Learn how the Chrome Tooling team optimized token usage for AI assistance, and discover techniques for more efficient data usage with LLMs.
developer.chrome.com
January 30, 2026 at 8:51 PM
What a banger of an article
developer.chrome.com/blog/designi...
Great job by the @developer.chrome.com team and as someone who has been very deep into the codebase and actually saw the evolution written in this article, and extracted it to build PerfAgent
developer.chrome.com/blog/designi...
Great job by the @developer.chrome.com team and as someone who has been very deep into the codebase and actually saw the evolution written in this article, and extracted it to build PerfAgent
Reposted by Vinicius Dallacqua
Here's your friendly reminder that CSS selectors are global and evaluated RTL, so if you have selectors that are very broad like `.container > div` you might be impacting performance in a measurable way 🙈
Before and after profile of server switching after some selector optimizations in @discord.com
Before and after profile of server switching after some selector optimizations in @discord.com
January 27, 2026 at 4:41 PM
Here's your friendly reminder that CSS selectors are global and evaluated RTL, so if you have selectors that are very broad like `.container > div` you might be impacting performance in a measurable way 🙈
Before and after profile of server switching after some selector optimizations in @discord.com
Before and after profile of server switching after some selector optimizations in @discord.com
Wrapping up the year with my article for the Perf Calendar with my write up about how I ended up creating agent.perflab.io!
It has AI, it has Perf…what else could you want 😎🔥
I’m always happy to see my content in the Performance Calendar!
Thanks for the initiative @stoyan.me !
It has AI, it has Perf…what else could you want 😎🔥
I’m always happy to see my content in the Performance Calendar!
Thanks for the initiative @stoyan.me !
December 31, 2025 at 5:36 PM
Wrapping up the year with my article for the Perf Calendar with my write up about how I ended up creating agent.perflab.io!
It has AI, it has Perf…what else could you want 😎🔥
I’m always happy to see my content in the Performance Calendar!
Thanks for the initiative @stoyan.me !
It has AI, it has Perf…what else could you want 😎🔥
I’m always happy to see my content in the Performance Calendar!
Thanks for the initiative @stoyan.me !
Reposted by Vinicius Dallacqua
My gist “How Browsers Work” has been updated with a new post: “How modern browsers work” by @addyosmani.bsky.social
gist.github.com/nucliweb/c16...
#WebPerf #Browser #WebDevelopment
gist.github.com/nucliweb/c16...
#WebPerf #Browser #WebDevelopment
How Browsers Work
How Browsers Work. GitHub Gist: instantly share code, notes, and snippets.
gist.github.com
November 7, 2025 at 11:14 AM
My gist “How Browsers Work” has been updated with a new post: “How modern browsers work” by @addyosmani.bsky.social
gist.github.com/nucliweb/c16...
#WebPerf #Browser #WebDevelopment
gist.github.com/nucliweb/c16...
#WebPerf #Browser #WebDevelopment
Reposted by Vinicius Dallacqua
Reposted by Vinicius Dallacqua
I’m super hyped and happy to announce that I’m getting even deeper into helping agents reason about software quality as I join QA.tech!
Since I’ve started working on PerfLab and then PerfAgent this has become an obsession. Now I get to do that full-time and I could not be more thrilled!
Since I’ve started working on PerfLab and then PerfAgent this has become an obsession. Now I get to do that full-time and I could not be more thrilled!
October 21, 2025 at 8:16 PM
I’m super hyped and happy to announce that I’m getting even deeper into helping agents reason about software quality as I join QA.tech!
Since I’ve started working on PerfLab and then PerfAgent this has become an obsession. Now I get to do that full-time and I could not be more thrilled!
Since I’ve started working on PerfLab and then PerfAgent this has become an obsession. Now I get to do that full-time and I could not be more thrilled!
Reposted by Vinicius Dallacqua
something very cool to see: Chrome recently shipped automatic <link rel="prefetch"> for all links in viewport
you could do it previously with libs like Quicklink, but it’s super cool to see this implemented natively
(it’s off by default, enabled with one html tag)
you could do it previously with libs like Quicklink, but it’s super cool to see this implemented natively
(it’s off by default, enabled with one html tag)
October 20, 2025 at 10:00 AM
something very cool to see: Chrome recently shipped automatic <link rel="prefetch"> for all links in viewport
you could do it previously with libs like Quicklink, but it’s super cool to see this implemented natively
(it’s off by default, enabled with one html tag)
you could do it previously with libs like Quicklink, but it’s super cool to see this implemented natively
(it’s off by default, enabled with one html tag)
Wrapping up the writting part for my talk at @perfnow.nl this weekend and I'm beyond excited for this one. Prepare for a deep dive folks!
September 20, 2025 at 11:10 AM
Wrapping up the writting part for my talk at @perfnow.nl this weekend and I'm beyond excited for this one. Prepare for a deep dive folks!
Reposted by Vinicius Dallacqua
✨SPDY STREAM 010 ✨ with Jacob Groß
📢 As mentioned during yesterday's stream, Jacob is our next guest, and we shall cover tag mgmt and the deleterious effect they can have on performance, esp web vitals and possible solutions. Join us!
📆 Wednesday Sept 17th
⏰ 1PM EDT
🔗 bit.ly/spdy-stream-010
📢 As mentioned during yesterday's stream, Jacob is our next guest, and we shall cover tag mgmt and the deleterious effect they can have on performance, esp web vitals and possible solutions. Join us!
📆 Wednesday Sept 17th
⏰ 1PM EDT
🔗 bit.ly/spdy-stream-010
SPDY STREAM with Jacob Groß 🇩🇪
In this episode, we are joined by Jacob Groß to discuss tag managers and their often detrimental effect on website performance. We will explore how tag managers can impact performance in a multitude o...
bit.ly
September 11, 2025 at 8:50 PM
✨SPDY STREAM 010 ✨ with Jacob Groß
📢 As mentioned during yesterday's stream, Jacob is our next guest, and we shall cover tag mgmt and the deleterious effect they can have on performance, esp web vitals and possible solutions. Join us!
📆 Wednesday Sept 17th
⏰ 1PM EDT
🔗 bit.ly/spdy-stream-010
📢 As mentioned during yesterday's stream, Jacob is our next guest, and we shall cover tag mgmt and the deleterious effect they can have on performance, esp web vitals and possible solutions. Join us!
📆 Wednesday Sept 17th
⏰ 1PM EDT
🔗 bit.ly/spdy-stream-010
Hello everyone, I have just heard that the company I'm a lead engineer for is going to downsize so I'm going to look for the next thing from next week.
I'm looking to work with AI engineering and am shipping lots of different code automations and agent workflows.
I'm looking to work with AI engineering and am shipping lots of different code automations and agent workflows.
September 5, 2025 at 1:28 PM
Hello everyone, I have just heard that the company I'm a lead engineer for is going to downsize so I'm going to look for the next thing from next week.
I'm looking to work with AI engineering and am shipping lots of different code automations and agent workflows.
I'm looking to work with AI engineering and am shipping lots of different code automations and agent workflows.
I'm beyond excited to share a stage with so many great names! This is a special event to me and I'm super hyped to share a bit of my story with you all ❤️
performance.now() is coming!
@webx.bsky.social [] will explain how he built a Performance AI assistant and agentic workflow on top of a fork of Chrome DevTools. Few AI systems can reason with the complex reality of performance data. Learn how to solve that.
perfnow.nl/speakers.htm...
@webx.bsky.social [] will explain how he built a Performance AI assistant and agentic workflow on top of a fork of Chrome DevTools. Few AI systems can reason with the complex reality of performance data. Learn how to solve that.
perfnow.nl/speakers.htm...
performance.now(); 30th and 31st of October, Amsterdam
On 30th and 31st of October, 2025, the sixth edition of performance.now() will take place in Amsterdam—a single track conference, covering today’s most important web performance insights.
perfnow.nl
September 4, 2025 at 4:22 AM
I'm beyond excited to share a stage with so many great names! This is a special event to me and I'm super hyped to share a bit of my story with you all ❤️
Reposted by Vinicius Dallacqua
Really excited to be speaking @perfnow.nl this year—my favourite conference run by some of my favourite people!
If you're into web performance (or wanna be!) and like a great conference with a super friendly vibe then pop along to Amsterdam at the end of October. Tickets selling fast!
perfnow.nl
If you're into web performance (or wanna be!) and like a great conference with a super friendly vibe then pop along to Amsterdam at the end of October. Tickets selling fast!
perfnow.nl
performance.now(); 30th and 31st of October, Amsterdam
On 30th and 31st of October, 2025, the sixth edition of performance.now() will take place in Amsterdam—a single track conference, covering today’s most important web performance insights.
perfnow.nl
September 2, 2025 at 6:42 PM
Really excited to be speaking @perfnow.nl this year—my favourite conference run by some of my favourite people!
If you're into web performance (or wanna be!) and like a great conference with a super friendly vibe then pop along to Amsterdam at the end of October. Tickets selling fast!
perfnow.nl
If you're into web performance (or wanna be!) and like a great conference with a super friendly vibe then pop along to Amsterdam at the end of October. Tickets selling fast!
perfnow.nl
Reposted by Vinicius Dallacqua
Google’s @jackf.io is speaking at the London MCP Dev Summit 🎤
Topic: Lessons learned building the Chrome DevTools MCP Server
👉 Don’t miss it: buff.ly/MwmiH5E (early bird pricing ends in 2 days!)
#MCPservers #DevToolsAI
Topic: Lessons learned building the Chrome DevTools MCP Server
👉 Don’t miss it: buff.ly/MwmiH5E (early bird pricing ends in 2 days!)
#MCPservers #DevToolsAI
August 29, 2025 at 1:50 PM
Google’s @jackf.io is speaking at the London MCP Dev Summit 🎤
Topic: Lessons learned building the Chrome DevTools MCP Server
👉 Don’t miss it: buff.ly/MwmiH5E (early bird pricing ends in 2 days!)
#MCPservers #DevToolsAI
Topic: Lessons learned building the Chrome DevTools MCP Server
👉 Don’t miss it: buff.ly/MwmiH5E (early bird pricing ends in 2 days!)
#MCPservers #DevToolsAI
Whist trying out my demo for the Agentic Perf Analysis and Debugging, I managed to use my V0 and my DevTools MCP servers to debug one of my V0 demo chats.
Using animation frame insights no less 😃
Using animation frame insights no less 😃
August 26, 2025 at 9:29 PM
Whist trying out my demo for the Agentic Perf Analysis and Debugging, I managed to use my V0 and my DevTools MCP servers to debug one of my V0 demo chats.
Using animation frame insights no less 😃
Using animation frame insights no less 😃
Reposted by Vinicius Dallacqua
performance.now() is coming to Amsterdam this October!
This event is great both for the inspirational talks as well as for the opportunity to meet folks from different companies and backgrounds to discuss how to successfully tackle web performance challenges!
This event is great both for the inspirational talks as well as for the opportunity to meet folks from different companies and backgrounds to discuss how to successfully tackle web performance challenges!
performance.now(), the web performance conference, 30th and 31st of October, Amsterdam. Single track, the best speakers in the industry, plenty of your performance-mad peers around to have fascinating conversations. What's not to like? Let's introduce our speakers ...
perfnow.nl
perfnow.nl
performance.now(); 30th and 31st of October, Amsterdam
On 30th and 31st of October, 2025, the sixth edition of performance.now() will take place in Amsterdam—a single track conference, covering today’s most important web performance insights.
perfnow.nl
August 25, 2025 at 1:56 PM
performance.now() is coming to Amsterdam this October!
This event is great both for the inspirational talks as well as for the opportunity to meet folks from different companies and backgrounds to discuss how to successfully tackle web performance challenges!
This event is great both for the inspirational talks as well as for the opportunity to meet folks from different companies and backgrounds to discuss how to successfully tackle web performance challenges!
Reposted by Vinicius Dallacqua
performance.now(), the web performance conference, 30th and 31st of October, Amsterdam. Single track, the best speakers in the industry, plenty of your performance-mad peers around to have fascinating conversations. What's not to like?
https://perfnow.nl/
https://perfnow.nl/
performance.now(); 30th and 31st of October, Amsterdam
On 30th and 31st of October, 2025, the sixth edition of performance.now() will take place in Amsterdam—a single track conference, covering today’s most important web performance insights.
perfnow.nl
August 25, 2025 at 1:18 PM
performance.now(), the web performance conference, 30th and 31st of October, Amsterdam. Single track, the best speakers in the industry, plenty of your performance-mad peers around to have fascinating conversations. What's not to like?
https://perfnow.nl/
https://perfnow.nl/
Reposted by Vinicius Dallacqua
Gain insights from @webx.bsky.social at the past conference talk on #AnimationFrames, #INP, and #LoAF APIs for responsive web applications! #webdev
https://gitnation.com/contents/what-is-an-animationframe-and-what-can-it-tell-you
https://gitnation.com/contents/what-is-an-animationframe-and-what-can-it-tell-you
August 12, 2025 at 2:00 PM
Gain insights from @webx.bsky.social at the past conference talk on #AnimationFrames, #INP, and #LoAF APIs for responsive web applications! #webdev
https://gitnation.com/contents/what-is-an-animationframe-and-what-can-it-tell-you
https://gitnation.com/contents/what-is-an-animationframe-and-what-can-it-tell-you
We're almost there!
After spending the week hacking OAuth support into Mastra MCP client class and getting the toolcall aproval workflow to an MVP state this sprint is soon coming to an end.
After spending the week hacking OAuth support into Mastra MCP client class and getting the toolcall aproval workflow to an MVP state this sprint is soon coming to an end.
August 8, 2025 at 5:18 PM
We're almost there!
After spending the week hacking OAuth support into Mastra MCP client class and getting the toolcall aproval workflow to an MVP state this sprint is soon coming to an end.
After spending the week hacking OAuth support into Mastra MCP client class and getting the toolcall aproval workflow to an MVP state this sprint is soon coming to an end.
This will be lots of fun. get ready to see how @developer.chrome.com can help you leverage AI to fix problems, but also get a glimpse of how AI native DevTools can look like 👀
Tune in live here:
gdg.community.dev/events/detai...
Tune in live here:
gdg.community.dev/events/detai...
Real Problems, Real Tools: AI & Web Performance | Google Developer Groups
Virtual Event - Join us for the first-ever GDG Web Stockholm event — a brand-new chapter focused on the future of web development!This o...
gdg.community.dev
August 5, 2025 at 12:53 PM
This will be lots of fun. get ready to see how @developer.chrome.com can help you leverage AI to fix problems, but also get a glimpse of how AI native DevTools can look like 👀
Tune in live here:
gdg.community.dev/events/detai...
Tune in live here:
gdg.community.dev/events/detai...
There's a larger goal of mine here, my experiments with MCP is to try to better understand how to enable good primitives for AI native systems.
Updates on PerfAgent, after spending some time implementing v0.perflab.io MCP server it's now time to create PerfAgent's MCP client.
It will be a great way to expose the agent to external services and agents such as @sentry.io Seer, and my own servers too, like V0.
It will be a great way to expose the agent to external services and agents such as @sentry.io Seer, and my own servers too, like V0.
July 30, 2025 at 7:41 AM
There's a larger goal of mine here, my experiments with MCP is to try to better understand how to enable good primitives for AI native systems.
Updates on PerfAgent, after spending some time implementing v0.perflab.io MCP server it's now time to create PerfAgent's MCP client.
It will be a great way to expose the agent to external services and agents such as @sentry.io Seer, and my own servers too, like V0.
It will be a great way to expose the agent to external services and agents such as @sentry.io Seer, and my own servers too, like V0.
July 30, 2025 at 7:31 AM
Updates on PerfAgent, after spending some time implementing v0.perflab.io MCP server it's now time to create PerfAgent's MCP client.
It will be a great way to expose the agent to external services and agents such as @sentry.io Seer, and my own servers too, like V0.
It will be a great way to expose the agent to external services and agents such as @sentry.io Seer, and my own servers too, like V0.
Here's a thread with some of my photos from @developers.google.com I/0 Connect in Berlin from earlier this month
#Googlel0Connect in 35mm film 🎞️
#Googlel0Connect in 35mm film 🎞️
July 21, 2025 at 12:49 PM
Here's a thread with some of my photos from @developers.google.com I/0 Connect in Berlin from earlier this month
#Googlel0Connect in 35mm film 🎞️
#Googlel0Connect in 35mm film 🎞️