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Cool Links

Cool links are a collection of interesting things I find around the web. They can range from fun dumb websites to deep thought-provoking essays, or more commonly something in between. The feed here updates frequently, and I compile everything into a blog post on the last day of each month.

Illustration of Cool Links in a laptop screen, with a hand pointing at them in a cool way.

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9 links from May 2026

Gap decorations: Now available in Chromium

Cool Link
2026-05-30
#dev

Yesss! I’ve waited for this for so long! One of the worst parts of my job is trying to implement those kind of separators (really common in designs) without this functionality being an actual thing yet. So many hacks, complex calculations, for something so visually trivial.

And even if it takes a while to get to other browsers, it’s mostly a visual drawback if not supported; so I can already start thinking about using it.

Open

Optical Toys , by Tim Holman

Cool Link
2026-05-30
#fun

A collection of fun optical illusions, with quick explanations of how they work.

I found out later that this is just one out of many other “toy” collections. I recommend checking those out as well!

Open

Parallel Cities , by Victor Naumik

Cool Link
2026-05-27
#fun

This website allows you to find the latitude of your city (or whatever city you want) and shows all the cities in the same latitude all around the world (or in the mirrored latitute i.e. opposite hemisphere).

My home city is opposite to Cairo, which is neat. The one I’m currently living in is parallel to Vancouver, which is also neat.

Open

Is AI Profitable Yet?

Cool Link
2026-05-25
#ai

Will it ever be? Probably not. What will happen then? Nothing good for us probably.

Open

Artemis II Photo Timeline , by Hank Green

Cool Link
2026-05-19
#fun

A nicely put-together timeline with a lot (all?) of the photos from the Artemis II mission that orbited around the Moon. The sequence of the spacecraft approaching the Moon is breathtaking!

Open

Better fluid sizing with round() , by Ahmad Shadeed

Cool Link
2026-05-19
#dev

I’ve been using clamp() for fluid text sizing for a while, and this article highlights the pros of using the round() CSS function to make the fluidity more predictable! I love the card height examples too, as that’s something that’s consistently a pain in almost every project I work on.

Open

Old'aVista , by Eric Mackrodt

Cool Link
2026-05-19
#fun

This is like a landing page + search engine for the old internet! It allows you to search for stuff on the Internet Archive without having to necessarily know the URL of every website you wanna visit.

I found some forum threads from 1998 of people discussing the imminent launch of Zelda Ocarina of Time. Fascinating stuff.

Open

Why Socialism? , by Albert Einstein

Cool Link
2026-05-05
#deep-read

Never thought I’d be linking to Einstein here, but this is a great essay about what constitutes humankind and society, how they differ, and how they mold each other (though this relationship is far from balanced).

The individual is able to think, feel, strive, and work by himself; but he depends so much upon society—in his physical, intellectual, and emotional existence—that it is impossible to think of him, or to understand him, outside the framework of society.

Still a great read even if “socialism” is a trigger word for you, by the way.

Open

UX Case Study: Waze , by Built for Mars

Cool Link
2026-05-05
#design #app

If you drive, you’ve probably hopped around between Waze, Google Maps and even Apple Maps at some point. Each has their own pros and cons, and while Waze used to have the edge on real-time information, that edge was stolen by Google Maps (not literally stolen; they’re literally developed by the same team).

But besides that, this case study goes into the differences between the 3 apps and how each displays similar things differently in order to highlight their own strengths.

Not that you asked, but my favorites are Apple Maps for actual navigation and Google Maps for everything else.

Open
© 2026 Matheus Fantinel
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