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Martin Michalek

@machal.bsky.social

Web performance guy (PageSpeed.cz & SpeedJar.com). Frontendisti.cz community head. Prague based. πŸ‡¨πŸ‡Ώ Supporting. πŸ‡ΊπŸ‡¦

182 Followers  |  131 Following  |  76 Posts  |  Joined: 19.09.2024  |  1.6157

Latest posts by machal.bsky.social on Bluesky

AI is great, but…

Today I asked ChatGPT to do a simple data analysis. A year ago, it handled it perfectly.

Now? Errors, inconsistencies, crashes, lost prompts β€” twice it even crashed my browser tab with a memory leak.

He’s a genius, but sometimes he drinks.

24.10.2025 15:09 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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We can finally see in the data how hiring for junior roles has dropped since the arrival of #ChatGPT.

The first chart shows demand for juniors.
The second shows demand for seniors.

The data is from the U.S. @economist.com

What’s your experience?

20.10.2025 08:40 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

#SaaS tools probably won’t die.

But building your own data analysis interface inside them no longer makes sense.

Just look at Toggl for example…

Great app, but when it comes to working with data? Mostly inadequate.

When #AI can deliver an analysis in seconds, it’s simply redundant.

10.10.2025 05:50 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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LukeW | Future Product Days: Future of Product Creators In his talk The Future of Product Creators at Future Product Days in Copenhagen, Tobias Ahlin argued that divergent opinions and debate, not just raw capability...

Interesting: #AI vs. #ProductManagement πŸ‘‡

AI generates ideas cheaply and quickly.

But true reasoning is social: it emerges from debate and conflicting perspectives.

Possible direction for AI? Systems that can actually disagree with each other and bring diverse views.

lukew.com/ff/entry.asp...

27.09.2025 07:30 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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LukeW | Letting the Machines Learn Every time I present on AI product design, I'm asked about AI and intellectual property. Specifically: aren't you worried about AI models

Luke Wroblewski makes a good point:

AI models aren’t stealing our content.

They behave just like people β€” reading, watching, learning, synthesizing.

lukew.com/ff/entry.asp...

14.09.2025 06:48 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Radiohead are touring Europe after 7 years.

In Berlin alone, they’ll play 4 shows in a row.

Tickets are sold in phases β€” each time you have to prove you’re not a scalper, and then it’s a lottery.

Crazy.

(And I didn’t get picked. 😭)

11.09.2025 14:59 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Why is it hard to predict the pace of #AI progress?

Take airplanes, for example, their speed.

From the Wright brothers’ plane to the first Boeing 7 series in the 1960s β€” half a century of huge progress.

And then half a century of stagnation.

25.08.2025 06:37 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Writing text:
– before AI: 1h
– with AI: 15 min

Meme search:
– before AI: 15 min
– with AI: 1h

18.08.2025 03:20 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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#WebPerf audits from #SEO agencies…

04.08.2025 06:55 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

We’ve just added case studies to our company's website.

The results of our #WebPerformance work are pretty good. :)

For example, we sped up sites like SIKO and Footshop by more than 2.5Γ—.

You’ll even find a few technical insights in there: pagespeed.cz/en/reference

30.07.2025 06:57 β€” πŸ‘ 5    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

This guy wants to work at 37signals β€” so he built a landing page and a pitch deck just for them. Brilliant.

By the way, we hired our newest team member at out company thanks to a similar approach.

Landing your dream job might be easier than you think.

37signals.kawaicheung.io

24.07.2025 07:34 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The Performance Inequality Gap, 2024 - Infrequently Noted How much HTML, CSS, and JavaScript can we afford? More than in years past, but much less than frontend developers are burdening users with.

A real eye-opener for prioritizing #WebPerformance?

Show your client their website on a low-end mobile device.

infrequently.org/2024/01/perf...

23.07.2025 06:26 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

What do you think the rise of AI β€” like AI Overviews in Google β€” means for the web?

Extinction?
Transformation?
Opportunity?

18.07.2025 09:04 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Most people think optimizing #PageSpeed means:
> β€œLet’s remove stuff. Delete as much as we can.”

What it’s really about:
> β€œKeep what you need. Just build it the right way.”

This applies to everything: images, GTM, tracking tools, WordPress…

As #WebPerf people we do #optimization, not #deletion.

02.06.2025 07:03 β€” πŸ‘ 2    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0
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My #WebExpo2025: AI, WebPerf & People

β€” @tej.as – Web as food for AI, UI revolution
β€” TomΓ‘Ε‘ Čupr – CEOs, AI, FOMO
β€” @tammyeverts.com – Slow websites still hurt after users leave
β€” @tkadlec.bsky.social – Core Web Vitals are just the start

Thanks to Ε Γ‘rka and the @webexpo.bsky.social team!

30.05.2025 07:01 β€” πŸ‘ 6    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0
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Responsive Web Design Designers have coveted print for its precision layouts, lamenting the varying user contexts on the web that compromise their designs. Ethan Marcotte advocates we shift our design thinking to approp…

Today marks 15 years since @ethanmarcotte.com introduced β€œresponsive web design.”

We decent web folks build for all devices now and don't think about it.

But in a time when websites are fighting for relevance, it’s worth looking back at those 15 years.
alistapart.com/article/resp...

25.05.2025 14:02 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

You don’t say β€œI used a computer” to write something.

So why say β€œI used AI”?

It’s just a tool. Everyone’s using it.

20.05.2025 08:40 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I’ve got a team of assistants.

While I’m writing an email to a client, images for an article are being generated, data analysis is running, and a newsletter summary is being prepared.

#AI is turning all of us into managers.

Success will belong to those who delegate and prioritize well.

11.04.2025 08:32 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Yes, for devs/content/creative is AI huge, but it doesn't mean all of them will be replaced by AI tools.

02.04.2025 14:03 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

They say 80% of programming will be done by #AI.

…say those who’ve mostly never written a line of code.

02.04.2025 10:36 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

We all use low-end devices way too little. πŸ“±

I think that’s one of the big issues of #WebDevelopment.

Today I browsed a few sites on an older mid-range Android, and it was a nightmare. πŸ™ˆ

01.04.2025 09:25 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

More context:
These are INP metric values from a Czech e-shop.
People also visit the site while traveling.

INP = the worse the device, the worse the metric.

The map shows where wealthier users vacation (green)
and where the larger crowds go (orange) β€” often with lower-end Androids.

21.03.2025 15:55 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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#WebPerformance:

What hypotheses come to mind when you see a chart like this showing the geographic distribution of the INP metric?

Graph is is for Central European E-commerce site.

(I do have a strong hypothesis, but I’ll keep it to myself for now.)

21.03.2025 11:32 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

Somebody told me MS Word has this feature too. Just copy Markdown and paste into document. Much better, but I don't use Word. πŸ˜…

21.03.2025 07:59 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Dark Reader β€” dark theme for every website Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing. For Chrome and Firefox, Edge and Safari.

OMG, how did I live without Dark Reader…!

This is a Chrome extension for darkening sites without dark mode. Google Docs, Gmail, whatever…

Everything is dark by default.

My eyes love it at the night. ✨

darkreader.org

21.03.2025 05:05 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

In the interfaces of #SaaS apps, small performance or UX annoyances often cumulate over time.

Individually they’re not a big deal. The problem arises when they start to cumulate.

The challenge? Users will never report this in their feedback. They just get a β€œweird feeling”.

20.03.2025 12:55 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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I love this.

Combined with #ChatGPT ability to generate #Markdown, β€œPaste into Markdown” is one of the best features of #GoogleDocs.

Markdown, once a format for programmers, is now like middleware for content.

20.03.2025 07:46 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I read somewhere that wanting a quick end to this war means supporting the wrong side.
Makes sense. πŸ‡ΊπŸ‡¦

03.03.2025 10:28 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Microsoft CEO’s Shocking Prediction: β€œAgents Will Replace ALL Software"
YouTube video by Matthew Berman Microsoft CEO’s Shocking Prediction: β€œAgents Will Replace ALL Software"

Is B2B #SaaS in danger because of #AIagents?

I’ve been thinking about this for a few months.
I already have some thoughts on it… but first, I want to ask you:

Is B2B SaaS in danger because of AI agents? And why?

www.youtube.com/watch?v=uGOL...

02.03.2025 19:41 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

According to this playbook, Europe has to remain weak β€” the U.S. and Russia will sort that out between themselves. They don't really care how.

This is a nightmare for us in Central Europe.

01.03.2025 08:18 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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