Years ago, when I was fretting about something or other, my son (who was around ten years old) quoted this to me. It was exactly what I needed to hear at the time. Maybe you need to hear it today? (Fast forward ten years. My son and I designed this poster for his university dorm room.)

🔥 Quick page speed tip! Use critical CSS for faster rendering. Users will abandon a page if it seems empty and inactive for more than 3 seconds. If they see content rendering or the skeleton of a page loading, you'll buy more time and patience. 👉 Read the guide: www.speedcurve.com/web-performa...

"Why don't my numbers match between Tool A and Tool B?" I get this question a LOT. Here's a good explainer.

How fast is fast enough? I'll be exploring this question in my #PerfNow keynote. I hope to see you there! And if you have your own thoughts on this question, I'd love to hear them! #webperf #sitespeed #pagespeed #ux

I say this every year and always mean it: WOW, what a speaker (and MC!) lineup we have for @perfnow.nl conference this year! I can't wait to see all these folks on the stage! This is when #PerfNow ticket sales start to go bananas — and we always sell out — so lock in your ticket soon! perfnow.nl

One of the fun things about taking holiday time is sitting back at my desk, looking at my monitor, and asking myself "What is it I do again?" If this sounds like you — and you care about site speed and UX — here's a quick refresher! 👉 👉 Web Performance Guide: www.speedcurve.com/web-performa...

💖 I loved this stroll down memory lane! 💖 Thank you, Joshua Bixby, for being such a fantastic boss and #webperf mentor sixteen (!!!) years ago!

So many great articles in this guide — all written by actual humans! (Shout-out to @andydavies.me, @cliffcrocker.bsky.social, @tkadlec.bsky.social, Joseph Wynn, @markzeman.com, and Steve Souders!)

"Synthetic, RUM, and CrUX data each have their place. It's important to keep in mind the limitations of each monitoring tool and what they're best used for so we don’t make the mistake of overlooking valuable insights." Excellent explainer from @markzeman.com: www.speedcurve.com/blog/crux-ru...

In today’s edition of “Guess That Unresponsive App”… Guess this app that would’ve been really helpful — and potentially lifesaving — to access when my family and I were hiking in the mountains yesterday… but which didn’t work because we were on 3G.

✨ SPDY STREAM 007 ✨ Had a great time yesterday w/ @tammyeverts.com + even better conversation about her current focus. "How fast IS fast?" This was an important q? she tackled + explained. What is fast on paper may not be in reality, even more so could be slow per your competitor's standards. 🎥 soon

Coming up in less than an hour – at 10am PDT / 1pm EDT! Henri and I will be chatting about page speed and UX, including the all-important question: How fast is fast enough?

"How fast is fast enough?" If you've ever asked this question, then you might want to join tomorrow's SPDY STREAM! Henri and I will be chatting about how to answer that question, among other things. See you there at 10am PDT / 1pm EDT!

Same code, same infrastructure, different context. Web performance is sometimes an ‘us thing’ and sometimes a ‘them thing’. For better or worse, we have a responsibility to cater to both.

Holy moly... our Speed Matters newsletter has gained 1K new subscribers in the past month! The summer edition goes out next week. It's not too late to sign up and join our 18K subscribers! Browse the archive and sign up here: www.speedcurve.com/newsletter/ (We won't spam you, I promise.)

CrUX isn't new, but there's still confusion about what it is and when it's useful (and when it's not). This is a FANTASTIC post from @markzeman.com that breaks down the difference between synthetic, RUM, and CrUX data – and when and why to use each tool. www.speedcurve.com/blog/crux-ru... #webperf

"Should I use synthetic monitoring, real user monitoring, or CrUX?" @markzeman.com wrote this helpful post! It includes: 🟠 How synthetic and RUM work 🟠 What is CrUX? 🟠 Is CrUX a substitute for RUM? 🟠 When & why to use each tool 🧀 An obscure cheese metaphor www.speedcurve.com/blog/crux-ru...

Cherishing every beach day with my 13-year-old girl.

Performance budgets are your best tool for fighting #pagespeed regressions & staying fast. That's why we've moved budget management into its own Budgets dashboard! This dashboard makes tracking #webperf thresholds & #UX goals easier and more intuitive than ever. www.speedcurve.com/blog/perform...

Great post from @cliffcrocker.bsky.social from @speedcurve.com investigating Long Animation Frames (LoAFs) and their correlation to business metrics: www.speedcurve.com/blog/long-an... Are you measuring LoAFs on your site? Helps with INP and beyond! #webperf

ICYMI, @cliffcrocker.bsky.social recently investigated the correlation between conversion rate and various LoAF metrics, including our experimental new LoAF Total Blocking Duration (TBD) metric. He saw some surprising trends alongside some expected patterns! www.speedcurve.com/blog/long-an...

Great findings in this post by @cliffcrocker.bsky.social! If a #webperf metric doesn't align with user behavior or business outcomes, how useful is it? Cliff investigates the relationship between new LoAF metrics and conversion rate across four retail websites. www.speedcurve.com/blog/long-an...

As another kid from a poor family whose first computer was a Commodore 64 – and as someone who was so very hopeful at the dawn of the web – I felt this talk by @scott.hanselman.com on every level. www.youtube.com/watch?app=de...

Got a new book on the business side of web performance by @tammyeverts.com. Studies are from awhile ago, but still interesting to read, and newer studies probably find similar things.

FACT: Every industry-leading site that I know of uses performance budgets to stay fast. It's never too late to join the club.

Return experience overall winner: SpeedCurve! 🏆🏆🏆 I love that Morgan not only makes a case for investing in real user monitoring for smaller sites, but also gives background for setting up the tools he tested. This is a great read for anyone who's getting started with #webperf. Thanks, Morgan!

Performance budgets are THE most effective way to stay on top of regressions. Here's an essential guide to get you started: www.speedcurve.com/web-performa...

This chat with @csswizardry.com and @cliffcrocker.bsky.social is a #webperf must-see! So many great insights, like... 👉 Nearly every site that is a SPA shouldn't be 👉 Ecomm sites shouldn't be built with #JS 👉 The # of images on a page directly affects conversions www.speedcurve.com/blog/web-per...

This essential post by @tammyeverts.com chimes with my experiences; teams I talk with don't understand that there are huge gains to be had when they finally get perf under thresholds that they think of as "impossible" with today's JS-laden stacks: speedcurve.com/blog/web-perform…

When you write a tech book, you don't do it for 💰💰. You do it to share a topic you're passionate about. When I get a royalty for my book, I don't think "Time to go shopping!" I think "Folks want to learn about one of my favourite topics!" If you've read my book, thank you! I'd love your feedback!

Ah… 3G my old friend. (Posted after returning to LTE territory.)

Travelling around rural Ontario means I’m in one-bar territory. FYI, this is what JS-bloated sites and apps look like.

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

So much great stuff in this huge performance budgets upgrade! 👍 Centralized budget management 👍 Easier navigation and filtering 👍 Budget names and descriptions 👍 Alert history 👍 Full audit trail for each budget 👍 And more! www.speedcurve.com/blog/perform... #webperf #ux #sitespeed #pagespeed

SmashingConf is coming to Amsterdam! 🇳🇱 Join us April 13–16, 2026, for a brand-new conference on design systems, CSS, AI, UX & more — made for designers & UI engineers who love the web. Views, vibes, and gezelligheid included. 💙 Early Bird tickets are available now! smashingconf.com/amsterdam-2026

Usability poll: If you wanted to translate French text to English, which field would you paste the text into? 👈 Left 👉 Right (If you already know the answer, please don't reply.)

Feeling overwhelmed by which #webperf / #ux metrics to track? Then this chart is for you. As you can see, there's no single perfect 🦄 metric – and each one has caveats – but if you start with this set, you'll cover a lot of important bases. Learn more here: www.speedcurve.com/web-performa...

RUM for all! 🍹 Being able to monitor real user experiences is more important than ever. And now it's easier than ever, with integrations like this new open-source SpeedCurve #Magento module and our recent #Shopify RUM app. #pagespeed #sitespeed #webperf #ux #corewebvitals

If you have a #Shopify store and you want to monitor your site speed and how it affects metrics like Core Web Vitals, bounce rate, and conversions, this app is a game changer. Plus, there's no coding or developer time required to get started! #webperf #ux #pagespeed #sitespeed #corewebvitals

When you get a chance to commission a Shopify app from a Shopify expert – who also happens to be a lovely person in every way – you say YES! Thank you, Sia, for helping us bring RUM to our #Shopify customers!

One of the most fun parts of my job is compiling the monthly @speedcurve.com newsletter – which I just noticed has hit 16K subscribers! The June edition comes out next week. You can sign up and check out the archive full of #webperf, #ux, and #seo goodness here: www.speedcurve.com/newsletter/

Exciting news for our #Shopify customers: Now it's easy to enable RUM in your storefront – no coding required! ⚡ Track #UX metrics like #CoreWebVitals ⚡ Measure impact of #sitespeed on conversion & bounce rates ⚡ Find & fix #webperf issues ⚡ Fight regressions www.speedcurve.com/blog/speedcu...

There are SO MANY #webperf charts! If you feel overwhelmed, start with these three: CORRELATION CHART – #sitespeed and business metrics WATERFALL CHART – how and when elements on your page render, so you can see why pages are slow COMPETITIVE BENCHMARKS – how fast you are compared to competitors

🎙️We're hiring an apprentice! @ian-frost.bsky.social and I have a ton of fun projects brewing, so we’re looking for a creative, passionate, curious, and kind go-getter to help us make it all happen. Read the details here 👉 bradfrost.com/blog/post/we...

LoAF monitoring is a HUGE new feature, because it lets us finally dig into RUM data to diagnose JS issues in the field! Among the many exciting facets of this release is a new metric – Total Blocking Duration (TBD) – a summary metric that you can set performance budgets and alerts for.

Bluesky has made it easier to add alt text, but some still struggle with HOW to write alt text. Sighted users who don't rely on alt text might feel overwhelmed. They might have questions on what details to include, or how to get started. This post from Veronica Lewis is a great resource.

Jane Austen, mountain gorillas, and how to make a perfect birthday cake.

Orwell wrote this in 1946. Despairing of the English language isn't new. The only thing that's new is *how* we're failing. These days it's AI slop, lazy sales copy, and disinformation. Words only matter if we make them matter. We need to do better. www.orwellfoundation.com/the-orwell-f...

AI had a fever dream about a brand-new Core Web Vital. I'm not going to call out the tech company blog where I saw this. I'm posting it as a cautionary tale about using ChatGPT to write about subject matter that's outside your wheelhouse.

Not sure what Long Animation Frames (aka LoAF) are, nor why they're crucial for quantifying and optimizing the JavaScript that's hurting your UX? This brilliant guide by @andydavies.me covers: 🔥 Why frame rate matters 🔥 Anatomy of a LoAF 🔥 How to get started www.speedcurve.com/blog/guide-l...