Sergey Chernyshev

@sergeyche.dev

I care about UX speed and organize NY UX Speed and Web Performance meetup

Technology, like time, cannot be stopped in it's relentless march forward. Much as us old timers would like to slow down one or the other just a little bit… In light of that, Chrome 153 will come with an updated list of modern devices for emulation mode—with nice categorisation—thanks to @jackf.io

An updated list of modern devices DevTools can emulate now nicely categorised into Mobile, Foldables, Tablets & Desktops, and Smart Displays.

I am feeling that with introduction of AI we might have less obvious changes in SDLC that can be quite useful. For example, the cost of modeling and visualizing system requirements might be so much lower that architectural decisions can be more informed. UX Speed Calculator was one of those tools.

We got a few new individual sponsors recently in @e18e.dev - thank you to those of you who are supporting us 🙏 Getting sponsorships for a community is much harder than for a popular web app or dev tool. Every little helps. If you'd like to help us improve perf for all of us, check out our OC 🩵

e18e - Ecosystem Performance - Open Collective

The e18e community has the aim of improving performance of tooling and packages in the JavaScript ecosystem.

opencollective.com

+++ Speaker Spotlight: Barry Pollard +++ What if browsers could stream HTML where it's needed, without all the JavaScript? At Fronteers Dark Mode, Barry Pollard explores Declarative Partial Updates, a proposal that could reshape server-rendered apps. Oct. 2nd in Dordrecht 🇳🇱⛵️ 🎟️ fronteersconf.org

Portrait of a person wearing a blue-and-white checkered shirt, looking directly at the camera against a dark background.

The curse of web performance - once you know it, you can’t unknown it and I see performance issues on the sites I visit too and can’t help it but open DevTools often as well. I was even thinking for creating a podcast-style Meet4SPEED YouTube channel looking at websites and improving them.

Joan León@nucliweb.net · 2w ago

An occupational habit: I open DevTools on every site I visit, hunting for things to improve. On skills.addy.ie I caught a 301 on every internal click, a wasted round trip. It was a trailing-slash mismatch. Wrote up the finding and the fix: joanleon.dev/en/trailing-... #WebPerf #Astro #Netlify

Screenshot of a desktop web browser displaying the agent-skills website on the left and Chrome DevTools’ Network tab on the right. The webpage heading reads “How agent-skills compares” with explanatory text describing how agent-skills relates to Superpowers and Matt Pocock’s skills, along with a “TL;DR” summary card. The DevTools Network panel shows document requests, including several 301 Moved Permanently redirects (such as skills, getting-started, lifecycle, teach, and compare) followed by corresponding 200 OK responses for URLs ending with trailing slashes. The browser address bar displays skills.addy.ie/compare/, and the Network panel is configured with Preserve log and Disable cache enabled and No throttling selected.

Watched “I swear” yesterday - a very good movie and amazing performance by everyone. It is heartbreaking how mental illness has stigma around it even though people don’t choose to have it. Not everyone’s Tourette’s is as intrusive as media portrays, but it doesn’t make it easier. Be kind, people!

As I head into the onsite phase with a bunch of cool companies, figured I’d put out one last call… ⚡️Would you like someone to make your frontend-heavy app faster or otherwise build/improve/take care of your frontend architecture or infrastructure? That person could be me! DM me! 🔥

i want to do a little ✨ ama about atproto ✨ in this thread. no question is too simple if you’ve been curious about atproto but don’t know much (anything?) about it, ask any question and i’ll try to explain it in my own words. (+ would love to hear from friends who aren’t very active on bsky)

Does anyone have any good pointer on how to approach converting product manager’s prototypes into a working code? Both are AI-assisted, both have the same scope, both extend the same software. What’s different?

🚨 Next Performance Observer episode will be on July 8 🚨 🎤 @sergeyche.dev will present "Introduction to UX Speed" 🎤 @mrsdaehin.bsky.social will talk about "Don't thank the AI: Sustainability and Performance" 📅 July 8th 🕧 6pm CEST / 5pm BST / 12pm EDT / 9am PDT 🔗 Zoom link at performanceobserver.dev

PerformanceObserver: A virtual web perf meetup

Join the PerformanceObserver virtual performance meetup to get all the latest web performance news and hang out with the community.

performanceobserver.dev