Martin Michalek

Getting web performance prioritized is the hard part. I will talk about this topic on @perfnow.nl. How do you make the case for web performance? → Share your experience in this 3–5-minute survey: pagespeed.one/en/perfnow 🙏 #WebPerf #WebPerformance #PageSpeed

If ads are slowing down your site, DevTools can now identify the scripts responsible → goo.gle/4i2xbRL In Chrome DevTools, open Application > Ads to check experimental CrUX ad metrics (including CPU and Network usage), browse a table of ad scripts, and highlight every ad on the page.

#FrontKon was 10 days ago, and I still don’t know how to sum it up. 650 developers, almost 30 talks. Actually, I don’t even know where to start. It was quite painful this year, but it ultimately led to a powerful, positive catharsis. Eventually, the right words will come. 😅

Webdesign these days. Two modals. And another one below them, blurred out. Just so I know it’s not going to be easy for me! Meetup dot com, love you! 😅

Working on website speed? Help me, please. I’m putting together small study on why it’s sometimes difficult to get faster websites approved I’m interested in your real-world experiences. It takes 3–5 minutes to complete. Every response helps. 🙏 pagespeed.one/en/perfnow #WebPerf #PageSpeed

My fellow teammate Tomas is talking about AI bots and Cloudflare @pagespeedone.bsky.social

Why is speed so hard to sell? Martin will look at where familiar arguments fail, what WebPerf can learn from SEO, and why ownership and incentives matter as much as metrics. You will leave with practical tips to turn performance into prioritized work. @machal.bsky.social at perfnow.nl

A slow website costs you up to 25% of conversions. Why choose PageSpeed.ONE PLUS? — Clear data instead of guesswork — Catch downtime before your clients do — Gives you the data to convince leadership Get a free 1-month trial 👇 pagespeed.one/en/app/new?t...

Weather around Prague is still ready to ride my bike. 🚴‍♀️🍂

A five-minute speech I spent two weeks preparing. Because putting together a 30-minute talk isn't a problem. But preparing a short, punchy, funny intro for your own conference... and keeping it under five minutes? That’s a nightmare! 😅 So, hopefully, Mr. Kout and I pulled it off at #FrontKon.

That was… #FrontKon. I'm tired, but happy.

FrontKon day one. Workshops.

Want a lightning-fast website? — Practical technical workflows — Case studies and the impact of site speed on revenue — Real-world optimization insights The best of the performance world right in your inbox. 👇https://pagespeed.one/en/newsletter

I'm super excited to attend and speak at FrontKon#26 next week in Prague! There are still tickets left for the event and for my accessibility testing workshop! www.frontkon.tech

What not to miss at #FrontKon 2026 in Prague. First time in English with @tej.as, @matuzo.at and many others great speakers. Fingers crossed to the team. Last week is hard! 🤞 michalek.blog/blog/frontko...

Czech-style weekend activities.

I’m honored to be speaking at @perfnow.nl My topic: Why is website speed so hard to sell—and what can we learn from sales, psychology, and the irrational way people make decisions? perfnow.nl

Want a lightning-fast website? A monthly newsletter full of web performance: 👉🏻 Technical tips and best practices 👉🏻 Case studies and business impact 👉🏻 Practical insights from our experience Subscribe to the PageSpeed.ONE newsletter👇🏻 pagespeed.one/en/newsletter

I'm working on my English. You know… I'm old, no talent for languages… 😅 I've tried everything possible. One thing really works for me – @italkioffical.bsky.social with live teachers, with iTalki Plus, AI lessons based on data from live lessons. What a great idea and execution!

I've continued my investigation into how "Delay JS execution" fakes Lighthouse scores. New piece on my personal blog: – which WP plugins ship it (WP Rocket, LiteSpeed Delayed, Perfmatters…) – what their own docs admit – how to spot it in the source. michalek.blog/blog/delay-a...

Oh dear, speakers are being announced in carload lots! Today we add bsky.app/profile/clif... about Core Mobile Vitals bsky.app/profile/jpam... as our second MC bsky.app/profile/mach... about selling web performance Come join them at perfnow.nl

#AI is turning the developer world upside down. Discussion is essential, and talks offer only one perspective. That’s why we’re adding two panel discussions to #FrontKon: 🤖 Agentic development in practice 👩‍💻 The present and future of work in IT Looking forward! www.frontkon.tech

Team building of the core team @pagespeedone.bsky.social. Beautiful weekend!

An interesting move. As part of the #CrUX data suite, Google will also measure technical and UX metrics related to ads. Finally, an effort to decipher just how much ads weigh down websites (including Google’s own).

@bradfrost.com in Prague. This is big. And great! luma.com/prjctr-s8ch

We just published two new workshops for #FrontKon conference: 1) Karpathy LLM wiki www.frontkon.tech/events/front... 2) Development with local LLMs: privacy, performance and practice www.frontkon.tech/events/front... See you?

Bike time. 🚴

Has your INP worsened since May? ⚠️ The Facebook Pixel may be to blame. AT PageSpeed.ONE, we’re already seeing its growing click-processing workload hurt responsiveness on several client websites. #WebPerf #PageSpeed #PageSpeedONE Context: www.linkedin.com/posts/erwinh...

A Lighthouse score can be improved without making a website faster. That’s not a Lighthouse bug. It’s what happens when we turn a diagnostic signal into a business target. Measure real users. Use Lighthouse to investigate—not to declare victory. Article: pagespeed.one/en/blog/ligh... #WebPerf

We turned off a plugin that was "speeding up" a client's site. — Lighthouse: 95 → 60 — Core Web Vitals: unchanged It wasn't optimising the site. It was optimising the test. We've found and documented third case of "hacking" Lighthouse score. My article: pagespeed.one/en/blog/ligh...

We turned off a plugin that was "speeding up" a client's site. — Lighthouse: 95 → 60 — Core Web Vitals: unchanged It wasn't optimising the site. It was optimising the test. We've found and documented third case of "hacking" Lighthouse score. My article: pagespeed.one/en/blog/ligh...

Judging by the interest in workshops at #FrontKon, the entire dev world has switched from AI-first to AI-only. There are still places available: www.frontkon.tech/en/events/fr... We'll list two more topics. Which ones would interest you?

Unpopular opinion: Think about Elon Musk what you want, but… His apps are getting really good in last months. Looking at X (comparing with Bluesky) or Cursor.

„If you lead something, you are a captain. A short-sighted captain“ I've written a piece about leading teams, people and companies. michalek.blog/blog/short-s...

Reading a Performance Timeline by @nucliweb.net. This would be great for people who still have issues with Performance Timeline in Chrome. I love the form of this site. perf.reviews/profile-guide