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Credit goes to kilianvalkhof.com

Kilian Valkhof

Building tools that make developers awesome.

Show Me The Magic podcast

Web, 30 July 2025

Last night (!) I recorded an episode of the Show me the magic podcast with Frederick Tubiermont. Frederick saw Polypane listed as one of the Paddle Launchpad Finalists (Hooray!) and reached out to ask if I wanted to record an episode with him.

Software Engineering Daily podcast

CSS & HTML, 7 May 2025

Recently, wholesome human from the internet Josh Goldberg interviewed me for the Software Engineering Daily podcast. We talked about Polypane, the web development landscape, and how I got into web development.

Tag, you’re it

Life, 1 May 2025

I got tagged by Hidde to blog some answers to questions about blogging, and since I definitely don’t use this blog enough, I’m taking him up on it …roughly a month later.

Pixel with purpose podcast

Web, 25 April 2025

I recorded a podcast with the folks from Nordcraft on their new Pixels with Purpose podcast channel. We chatted about accessibility, education around that and of course about Polypane.

Advent Calendars

CSS & HTML, 6 January 2025

Happy new year! In December I was lucky enough to write articles for three different advent calendars: HTMHell, 12 days of web and the Fronteers Advent calendar.

Polypane browser for responsive web development and design Hi, I'm Kilian. I make Polypane, the browser for responsive web development and design. If you're reading this site, that's probably interesting to you. Try it out!

I develop more software and tools:

Superposition

Use the design system you already have

FromScratch

A cross-platform, simple and smart autosaving scratchpad.

A Messenger Adventure!

Go on a text adventure in Facebook Messenger.

FixA11y

Browser extensions that automatically fix accessibility issues.

Trimage

Drag-and-drop lossless compression of PNG and JPG images for web.

Messenger Demo Viewer

Demo your (bot) interactions on Messenger.