Kilian Valkhof
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kilianvalkhof.com
Kilian Valkhof
@kilianvalkhof.com
I build tools for devs and designers: @Polypane.app, FixA11y, Superposition | Electron governance member | He/him
tad aggressive there, Firefox.
December 4, 2025 at 11:51 AM
I’m at DevFest Strasbourg today! My talk is at 15:40 on stage 1.

I brought stickers, so come say hi!
November 27, 2025 at 9:10 AM
🎊
November 17, 2025 at 11:09 AM
I don't often get nerd sniped * but I just added support for line numbers in @Polypane.app's elements panel after thinking it impossible for the past 5 years.

* okay like once a week. maybe twice.
October 15, 2025 at 11:09 AM
This was a tiny feature to implement, but I get so much value out of color coding the address bar depending on the domain I'm working on.

Tab customization in @polypane.app: polypane.app/docs/tab-cus...
September 30, 2025 at 8:29 AM
Please can someone who is good with UX help me pick out a nice border radius for my macOS app.
September 22, 2025 at 1:40 PM
It's fixed for me!
September 18, 2025 at 8:59 AM
Remind me again, how much is @linkedin.com worth nowadays?
September 17, 2025 at 11:47 AM
September 11, 2025 at 2:16 PM
-> Polypane
-> Focus mode
-> So smooth.

Bonus:
1. Animated transition between known sizes
2. Zoom way, way larger than your current screen
3. Stress test with random resizes
September 11, 2025 at 1:16 PM
Geez @discord.com maybe chill out a little.
September 10, 2025 at 1:17 PM
This seems to be a little under the radar, but Chromium 140 ships with support for caret-shape!

Instead of a regular bar, you can also have a block (like insert) or underscore (great for 2fa codes and other digits)
September 8, 2025 at 12:11 PM
Just SaaS things.
July 31, 2025 at 7:35 AM
"Google search is very smart, it doesn't check words but knows semantics!!"

me: *changes the word "developers" to "devs" in the site title*

Google:
July 23, 2025 at 8:54 AM
The State of HTML survey is live!

Share your opinion on HTML and the DOM: survey.devographics.com/en-US/survey...
July 21, 2025 at 8:43 AM
5 web features I find annoying as a seeing person, an abridged list: *gestures vaguely across the screenshot of the link*
July 14, 2025 at 3:10 PM
quick video showing with and without word-spacing.
July 7, 2025 at 7:11 AM
another pedantic thing: the user icon isn't vertically centered *eye twitch*
July 7, 2025 at 7:04 AM
Are... are the linkedin bros okay?
June 19, 2025 at 10:10 AM
Strong words by Alex Russell at JSNation today.
June 12, 2025 at 10:47 AM
Strong words by Alex Russell at JSNation today.
June 12, 2025 at 9:16 AM
Here’s @sachagreif.com spreading the gospel at JSNation.
June 12, 2025 at 7:51 AM
I scored 525 points. Take the survey to see if you can beat me!
June 4, 2025 at 2:01 PM
Google's updating their Material design language. After three years of research they found that... "BIG THING EASY TO SEE". Good job!

I understand that the big ass button in the middle of the screen is better than the tiny tipped-over tipi in the top right.

Still worse than a button with "send".
May 16, 2025 at 8:36 AM
Youtube's much higher res
May 13, 2025 at 1:44 PM