| Website | https://sustainablewww.com |
| Website | https://sustainablewww.dk |
| Website | https://sustainablewww.se |
| [email protected] |
When I was a junior, I celebrated when code compiled. That was the bar. The logic was usually fine — it was the syntax, the “grammar” that broke everything. I’d spend entire evenings debugging what should’ve taken minutes.
I grew up in the era of 56K modems where downloading a 3MB image took 7-8 minutes. We had to think carefully about what we added to a page. Today, we have fast connections and we stopped thinking. Maybe it’s time we start again.
What’s the heaviest website you’ve come across recently?
The best code is the code that doesn’t get written. The best function is the one that doesn’t get built. It takes more experience to know when to say no than to know how to build something complicated. That’s not laziness — it’s maturity.
I’ve been a developer for 10 years now. The way I think about code today is almost unrecognizable from where I started. Here’s what actually changed — and why it matters. 🧵
A single web page can emit 10 grams of CO2 per visit. If that page gets 10,000 visitors a month, that’s 100 kilograms of carbon dioxide. From one page. Now multiply that by the millions of websites out there and you start to see the whole picture. Small optimizations really do matter.
Building something serious on the side of a full-time job will cost you friendships.
Not dramatically. Just quietly, over time.
I have accepted that. What keeps me going is purpose and one non-negotiable rule: No matter what is happening at work, my family comes first.
Fires will always appear during the day.
Urgent messages. Unexpected tasks. Someone needs something now.
I do not let it hijack my focus.
I write it down immediately, get it out of my head, and return to what I was doing.
I run a sustainable web design company alongside a full-time dev job.
The only reason it works is planning.
If a task surprises me on the day, it feels heavy.
If I already planned it the night before, my brain has been quietly solving it for hours before I even sit down.
Want proof that multitasking does not exist?
Count 1 to 20. Then 20 back to 1. Easy.
Now interleave them. 1, 20, 2, 19, 3, 18…
Slower. Harder. More draining.
That is the exact cost every time you switch context at work. You are not multitasking.
I read a lot about sleep science and the evidence is brutal.
Chronic sleep deprivation is linked to cognitive decline and serious long-term health conditions.
I moved my alarm to 05:20 and made sleep non-negotiable. Best decision I made.
