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Polypane 14

11 min read. Posted on June 7, 2023

Polypane 14 is here! In this release we added support for testing with multiple sessions, a new Elements Debug panel to quickly help you debug issues, an updated UI, new screenshot options, performance and UI…

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ColorContrast.App: a new place for our color contrast checker

2 min read. Posted on April 13, 2023

We first released our color contrast checker three years ago. At the time it was one of the first ones that gave suggestions , based on the needs I had while working on an open-source corona tracking app. Later on the…

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Polypane 13.1

9 min read. Posted on April 12, 2023

Polypane 13.1 is here! In this release we retooled our build system from webpack to Vite, which has improved the startup time and UI performance of Polypane by about 20%. 13.1 also adds network requests to the Console…

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Polypane on PodRocket

1 min read. Posted on April 5, 2023

On April 5th Kilian was a guest on the PodRocket podcast . Together with Paul Mikulskis we chatted about Polypane, developer experience, and more! Listen to it here Thanks PodRocket for having me on!

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Forced colors explained: A practical guide

10 min read. Posted on March 6, 2023

Forced colors is a CSS media query that when active radically changes the way your site looks, without any of your input. In this article we'll explore where it comes from, how it changes your site and how you can adapt…

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Using Polypane to check a website with James Q Quick

1 min read. Posted on February 17, 2023

Together with James Q Quick Kilian showcased how Polypane can be used to find issues and suggest improvements on a live website. During the livestream Kilian and James went through his new portfolio site and checked…

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Building a lightbox with the Dialog element

7 min read. Posted on February 8, 2023

The dialog element lets you overlay content on top of your site in something called the "top layer", which is a special layer that sits above all other content. This way you never have to worry about your dialog being…

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Polypane 13: CSS Nesting, extension support in beta, search by selector and Chromium 110

8 min read. Posted on February 1, 2023

Polypane 13 is here! We're launching beta support for regular browser extensions, have a new way to search for elements and have added support for CSS Nesting in the elements inspector. Polypane 13 also runs on Chromium…

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Polypane on

1 min read. Posted on January 4, 2023

On December the 30th Kilian was a guest on the Supper Club to talk about Polypane. Wes, Scott and Kilian spoke about Kilians background, how he came up with Polypane, how it's built and how different features…

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:where() :is() :has()? New CSS selectors that make your life easier

10 min read. Posted on January 3, 2023

When people talk about CSS complexity, a major contributor to that is CSS specificity, or writing effective CSS selectors. The more you add to a CSS selector, the more precise it is, but also, the more specific it is, so…

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Polypane 12: introducing the Command bar

7 min read. Posted on December 12, 2022

Polypane 12 introduces our new command bar, that you can use to control any part of the app without leaving your keyboard. We also improved the reference image, color picker and screenshot features, added new…

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Polypane 11: JSON viewer, new accessibility tools, Chromium 106, iPhone 14 devices and screenshot updates

13 min read. Posted on October 4, 2022

Polypane 11 now renders JSON files in a completely new viewer, adds a ton of new accessibility testing features and improves upon existing ones, updates the rendering engine to Chromium 106, includes new iPhone 1…

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