Unlock the next generation of developer productivity. In this talk, @addyosmani.bsky.social dives into how AI-powered tools are transforming the way we build software. Watch the talk recording: gitnation.com/contents/the...

My talk from this year's We Love Speed is on YouTube! 👇 In "Tight Mode: how browsers REALLY load web pages", I take a very deep/very nerdy dive into why browsers sometimes intentionally delay loading resources, why they all do it differently, and why they should *stop clowning around* 🤡 #webperf

📣 It's live! Here's the full write up of how I show Bluesky likes on my blog posts, after I've shared them to Bluesky. Like this post to be featured on this blog post (until there are more than 59 likes, in which case, you'll bumped off)!

Hey folks, Who is doing interesting work relating to web performance in product teams or elsewhere in Latin America, Africa, Asia? #WebPerf #WebPerformance I'm looking to invite a few speakers for an event in London. Please share for reach. 🙏🏼

Last week I gave a talk at the #PerfNow conference titled “Performance Mistakes”. I started off explaining a bit about Etsy’s blameless culture, and how it’s ok to make mistakes. Then I shared 17 common #webperf mistakes using @httparchive.org data, with examples. www.slideshare.net/slideshow/pe...

There are a lot of new folks here (hi!), sharing that I made a CSS Grid Generator tool that might be useful to you if you're making a site. https://buff.ly/3c8XSzI Enjoy!

Thanks so much to everyone who attended my day 1 keynote at #PerfNow! The video will be up soon, but for now here are my slides. • Global web usage • #webperf (in)equality gap • Page bloat • What metrics can tell us & what they can’t • Common optimization mistakes speakerdeck.com/tammyeverts/...

Who takes the best notes at #perfnow This fella! @mcmillanstu.bsky.social Read them here: stuart-mcmillan.com/blog/webperf...

Hey everyone! I ended my #perfnow talk by asking you all to consider contributing to the broader #webperf community. And one project I called out was e18e.dev. They're trying to connect together people working on JS packages performance (example below). Please consider joining their discord!

Some great tips for creating content for people who speak English as a foreign language which can probably even help people who speak it as their first language. Plain language ftw! design.homeoffice.gov.uk/content-styl...

Great start to #perfnow this year with @tammyeverts.bsky.social and @csswizardry.com ! For those of you looking for the general web perf starter pack, here it is! Lots of new folks since last time I shared it go.bsky.app/RVWSVqe

💡 Tip: You can set your website as your username on Bluesky! This is one form of self-verification, and we especially encourage official organizations and brands to do this! Examples include @npr.org @react.dev @duolingobrasil.com.br. Here's our guide for how to do this:

performance.now() 2025 will take place on 30th and 31st of October, 2025. #perfnow

HEY. I had the great opportunity to go on the @syntax.fm podcast and talk about web performance, web components, & a lot more. That episode is live with an absolute linkbait title wherever you get your podcasts! 🎉 syntax.fm/show/848/web... open.spotify.com/episode/0YgS...

This is the A/B test from @tkadlec.bsky.social that @anniesullie.bsky.social referred to during her #perfnow talk. timkadlec.com/remembers/20...

I have been assured by @tkadlec.bsky.social and @csswizardry.com that you can work in #webPerf if you are below 6ft - @perfnow.bsky.social

"You can always just try out the tools and blog about it" - @anniesullie.bsky.social has some ideas for you to contribute to the perf community on any level @perfnow.bsky.social #perfNow

Thank you @anniesullie.bsky.social for helping me to become better at performance engineering with tips for dev tools and ideas for experiments at @perfnow.bsky.social #perfNow

Thanks for the shout-out for my performance plateau post, @anniesullie.bsky.social ! For folks who want learn more, here it is. #perfnow www.speedcurve.com/blog/web-per...

Closing talk day 2 @ #PerfNow: @anniesullie.bsky.social showing how much time improving CWVs saved. I like how Alex's great talk at the closing of day 1 was a wake-up call and now we get to see the positive side of things as contrast.

Found this to be quite a romantic but true reminder (non mutually exclusive) - loosely quoted sorry @danielroe.dev “developers who become too in love with their tools lose sight of what it means to be an artisan, the creativity and power in building for a purpose.” #nuxt @perfnow.bsky.social

Yesterday during my #perfnow talk, I mentioned the Web Performance Slack. If you’d like to join the Slack, use this link before Nov 25: join.slack.com/t/webperf…

#PerfNow: My favorite nerd week of the year! ❤️

Deployed a quick China web compatibility testing tool together just for the @perfnow.bsky.social community, v 1.0. Let me know what you think⚡️ #perfnow #performancegaps

Do you want to use your @netlify.com site domain as a custom handle in Bluesky? You can now set it up with a few clicks on the Netlify UI. Look for "Bluesky Custom Domain" in the Netlify Extensions directory or head to app.netlify.com/extensions/b....

TIL about unplugin-purge-polyfills which looks useful if a part of your web app is OLD legacy code held together by tape and prayers (like mine is 🙈🙏🏻) from @danielroe.dev at @perfnow.bsky.social #perfNow

I had heard of NuxtJS but I'm definitely interested now after hearing @danielroe.dev talk about how it handles 3rd party scripts at @perfnow.bsky.social #perfNow

I had a blast, speaking at the 5th (and my 4th) @perfnow.bsky.social conference together with my colleague, CEO, bos, partner and wife @karlijnlowik.bsky.social We're not done yet, more talks and socializing to come Meanwhile, sllidesof our talk can be found here: www.rumvision.com/blog/perform...

As someone who works with a lot of tables, excited to check this out. Thank you for the wonderful talk! @jasew.bsky.social & @pcwilliams.bsky.social at @perfnow.bsky.social #perfNow

Great summary of font advice from @mandymichael.bsky.social from an amazing #perfnow talk on font performance! More resources: github.com/mandymichael...

📣 PSA: please please please upvote and show interest in github.com/whatwg/dom/i... and we’ll have easily deployable, non-hacky solution for yielding on interactions – then we can all see these gains demonstrated by @erwinhofman.bsky.social at #perfnow

a few common Bluesky misconceptions i see in articles

For the #perfnow attendees who said they’ve never heard of INP before today, here’s an easy-to-understand introduction. www.speedcurve.com/web-performa...

Variable fonts are great, but if you just need a single weight/style/‘axis’, you can save a huge amount of data by reverting to an old-school non-variable font. @mandymichael.bsky.social at #perfnow

My favourite image from @perfnow.bsky.social thanks to @erwinhofman.bsky.social and @karlijnlowik.bsky.social #perfNow

You could end up loading your font twice if you forget to add "crossorigin" ("crossOrigin" for JSX) - @mandymichael.bsky.social at @perfnow.bsky.social #perfNow #webPerf

@mandymichael.bsky.social talks about how you should be using variable font files in the woff2 format for your self hosted custom font files at @perfnow.bsky.social #perfNow

We’ve put a lot of work into making Bluesky a healthier social network. This app is designed to give you a choice — in what you want to see, what you don’t want to see, and how you want to interact. Some tips on how to customize your experience:

“Most website owners have no idea adding a third-party script will impact their site performance, their customer and their revenue” – @gri.gs at #perfnow Tag managers should definitely collect and expose performance data (e.g. INP/LoAF) to put pressure on 3Ps.

📝 Put your pencils down—now you can annotate traces directly in the performance panel! + Label time ranges + Label individual entries + Connect entries together Alina Varkki walks you through all of the new features in today's blog post 👇 developer.chrome.com/blog/devtool...

Really loving @gri.gs 's approach to auditing 3rd party scripts for his clients and his insights about dealing with them at @perfnow.bsky.social #perfNow

“Most web performance metrics and resources are developed with a privileged user in mind.” @szynszyliszys.bsky.social at @perfnow.bsky.social #perfnow

Here’s the Jumia case study that @szynszyliszys.bsky.social just shared at #perfnow. web.dev/case-studies...

TIL about adaptive loading - "Deliver experiences best suited to a user's device and network constraints" and a react library I can use for it - github.com/GoogleChrome... by Anna Migas at @perfnow.bsky.social #perfNow

"Mobile phones take 2-5x more time to parse/ compile than laptops" - Anna Migas talking about the challenges to web performance outside in emerging markets like Nigeria at @perfnow.bsky.social #perfNow

All 17 performance mistakes: @paulcalvano.bsky.social #webperf #PerfNow

"If you're using compression level 1, you're probably leaving stuff on the table, so increase it" - @paulcalvano.bsky.social at @perfnow.bsky.social #perfNow #webPerf

Fellow #perfnow attendee, the PerfPlanet advent calendar is looking for articles for the 2024 edition. Please come talk to me if you’re considering an idea for a post but you’re not sure and you need a second opinion calendar.perfplanet.com/contribute/

At #perfnow, @ericwbailey.website made great points about how improving the INP metric, which measures latency after user interactions, can improve accessibility as well: reducing the amount of JS that runs after user interactions can reduce delays in updating assistive technology after interactions

@paulcalvano.bsky.social shares that ~4% of sites in the HTTP Archive lazy load the LCP element. Yikes! #perfnow