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Polypane. For devs who care

@polypane.app

The missing half of your development environment. Chromium-based workspace for building great websites. Built for web developers who care | Try out for free at https://polypane.app | By @kilianvalkhof.com

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Latest posts by Polypane. For devs who care @polypane.app

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Polypane Portal | Polypane Polypane Portal shares your local development environment with anyone, anywhere, on any device while keeping everything in sync.

Not enough people know this! Sharing your localhost to a public URL takes just two clicks in @polypane.app.

๐Ÿ‘จโ€๐Ÿณ๐Ÿ’‹ for testing on all your real-world devices. Interactions are synced, logging is sent to Polypane.

๐Ÿ˜ for letting others see your WIPs. Share your stuff w/o deploying

polypane.app/portal/

03.03.2026 15:25 ๐Ÿ‘ 10 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1
A dialog titled "Code faster with AI-powered suggestions". There is a block saying "Things to consider", and within it highlighted is that your code "may be seen by human reviewers"

A dialog titled "Code faster with AI-powered suggestions". There is a block saying "Things to consider", and within it highlighted is that your code "may be seen by human reviewers"

If you turn on "AI-suggestions" (that are so bad they preemptively warn you it's probably wrong and also maybe don't run it), Google will slop up your console history and let human reviewers see it.

Use a browser where the dev can't be bothered to ex-filtrate your data. Try @polypane.app.

06.03.2026 08:48 ๐Ÿ‘ 12 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Polypane Portal | Polypane Polypane Portal shares your local development environment with anyone, anywhere, on any device while keeping everything in sync.

Not enough people know this! Sharing your localhost to a public URL takes just two clicks in @polypane.app.

๐Ÿ‘จโ€๐Ÿณ๐Ÿ’‹ for testing on all your real-world devices. Interactions are synced, logging is sent to Polypane.

๐Ÿ˜ for letting others see your WIPs. Share your stuff w/o deploying

polypane.app/portal/

03.03.2026 15:25 ๐Ÿ‘ 10 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1

(I did log an issue, maybe there's a workaround)

03.03.2026 15:18 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

There's not really something we can do to fix this. The CSS for the popup is...not good. It uses absolute positioning everywhere, that means when Electron gets the intrinsic ("preferred") height/width it's much smaller than the content.

I guess the Chrome UI team compensates for poor behavior here.

03.03.2026 14:58 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
01.03.2026 00:12 ๐Ÿ‘ 6 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Not really. You can inspect the popup when launching Polypane with a remote debugging port. There are a ton of different small things that can cause issues within extensions. Iโ€™ll put it on the list to check out and see if we can do anything about it

26.02.2026 14:58 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Kilian is in Montreal, Canada all week for Confoo.

If youโ€™re at Confoo: come say hi, Kilian brought stickers. If youโ€™re not, you really should be!

If you want a Polypane demo at your office this week, reach out!

23.02.2026 19:43 ๐Ÿ‘ 4 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
A man and a woman viewing two laptops. We see the covers of the laptops and one of them is covered in stickers by Polypane, Fronteers, NL Design System and more.

A man and a woman viewing two laptops. We see the covers of the laptops and one of them is covered in stickers by Polypane, Fronteers, NL Design System and more.

Accessibility researcher (and Polypane user) @200ok.nl was on national TV just now to talk about the (lack of) accessibility of online chatbot and โ€ฆwhatโ€™s that on his laptop? ๐Ÿ‘€

21.02.2026 18:27 ๐Ÿ‘ 18 ๐Ÿ” 2 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1
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How to debug the @starting-style at-rule in Polypane | Polypane The @starting-style at-rule makes it possible to animate in elements as you add them to the DOM, something that previously needed JavaScript trickery toโ€ฆ

How to Debug the โ€œ@โ€Šstarting-styleโ€ At-Rule in Polypane, by @polypane.app:

https://polypane.app/blog/how-to-debug-the-starting-style-at-rule-in-polypane/

#howtos #debugging #css #animations #polypane

21.02.2026 13:30 ๐Ÿ‘ 3 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Direct, actionable feedback and insights while you develop is exactly our goal with Polypane ๐Ÿคฉ

19.02.2026 18:51 ๐Ÿ‘ 21 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

...Seems to be working again. Pfew ๐Ÿ˜ฎโ€๐Ÿ’จ

direct installs and updates work again, for Homebrew you'll need to wait until they have updated SHAs, which should be in ~3hr or so.

17.02.2026 18:54 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1

We're tracking an issue with 28.0.1 on mac not being installable, sorry about that.

Will fix ASAP

17.02.2026 17:21 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1
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Polypane 28: Project improvements, Elements panel updates and Chromium 146 | Polypane The first release of 2026 comes with plenty of improvements to Projects, the new Environments feature prevents you from confusing production for localhost, theโ€ฆ

We just released version 28.0.1 with some bug fixes and nice quality-of-life improvements!

Full changelog: polypane.app/blog/polypan...

17.02.2026 15:26 ๐Ÿ‘ 8 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

This seems to be missing a Dutch browser vendor ๐Ÿค”

Donโ€™t worry, @polypane.app will definitely be there as well.

17.02.2026 14:43 ๐Ÿ‘ 10 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

I've been using @polypane.app for about a week and it's going great. It's like 1000x better than Safari for dev & the # of ways it's made my accessibility auditing workflow better is impressive. Seems like every time I search the docs "can I do XYZ?" the answer is yes! Hope to write about it soon.

16.02.2026 22:24 ๐Ÿ‘ 37 ๐Ÿ” 3 ๐Ÿ’ฌ 4 ๐Ÿ“Œ 2

Can't wait to read about your thoughts Ashlee!

17.02.2026 09:42 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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How to debug the @starting-style at-rule in Polypane | Polypane The @starting-style at-rule makes it possible to animate in elements as you add them to the DOM, something that previously needed JavaScript trickery toโ€ฆ

How to debug the @starting-style at-rule in Polypane

Why @starting-style exists, how to use it, how to inspect and edit it, and a little bit about what makes Polypane's elements panel so different from other devtools and why that makes things better for you.

polypane.app/blog/how-to-...

12.02.2026 12:58 ๐Ÿ‘ 4 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Polypane 28: Project improvements, Elements panel updates and Chromium 146 | Polypane The first release of 2026 comes with plenty of improvements to Projects, the new Environments feature prevents you from confusing production for localhost, theโ€ฆ

Polypaneย 28: Project Improvements, Elements Panel Updates, and Chromiumย 146, by @polypane.app:

https://polypane.app/blog/polypane-28-project-improvements-elements-panel-updates-and-chromium-146/

#releasenotes #polypane #browsers

13.02.2026 08:30 ๐Ÿ‘ 2 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Great release ๐Ÿ’ฏ I just managed to reproduce a bug I've be failing to do in Chrome for a long time, simply because I've been trying to do it in full width! Panes are a really powerful way to quickly gain confidence that your thing works across multiple viewports.

12.02.2026 22:34 ๐Ÿ‘ 1 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Thatโ€™s been there since its first release ;)

13.02.2026 06:15 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
a context menu on a header, showing a list of options like "inspect element" and "reload this pane". The cursor is on a highlighted item named "Copy link to document fragment".

a context menu on a header, showing a list of options like "inspect element" and "reload this pane". The cursor is on a highlighted item named "Copy link to document fragment".

Did you know you can right-click any element with an ID to get a link to the document fragment? And just as easily have it formatted as markdown?

One of the many things that takes dozens of steps in other browsers that takes two clicks in Polypane.

11.02.2026 09:18 ๐Ÿ‘ 5 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Don't have chrome canary with experimental platform features set up?

Don't worry, also works like a charm in @polypane.app ;)

12.02.2026 10:54 ๐Ÿ‘ 4 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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How to debug the @starting-style at-rule in Polypane | Polypane The @starting-style at-rule makes it possible to animate in elements as you add them to the DOM, something that previously needed JavaScript trickery toโ€ฆ

How to debug the @starting-style at-rule in Polypane

Why @starting-style exists, how to use it, how to inspect and edit it, and a little bit about what makes Polypane's elements panel so different from other devtools and why that makes things better for you.

polypane.app/blog/how-to-...

12.02.2026 12:58 ๐Ÿ‘ 4 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

If you tried installing a VPN or proxy extension into Polypane, can you tell us why?

It happens a lot and it's a use case we really want to understand. We follow back, so you can DM if you prefer ๐Ÿ™

11.02.2026 15:52 ๐Ÿ‘ 1 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1

Special shout-out to @simpleanalytics.bsky.social which automatically filters out Polypane without you having to do anything ๐Ÿ™Œ

11.02.2026 09:22 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
a context menu on a header, showing a list of options like "inspect element" and "reload this pane". The cursor is on a highlighted item named "Copy link to document fragment".

a context menu on a header, showing a list of options like "inspect element" and "reload this pane". The cursor is on a highlighted item named "Copy link to document fragment".

Did you know you can right-click any element with an ID to get a link to the document fragment? And just as easily have it formatted as markdown?

One of the many things that takes dozens of steps in other browsers that takes two clicks in Polypane.

11.02.2026 09:18 ๐Ÿ‘ 5 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

We'll write a full article on this later once we've gathered information for more analytics tools!

11.02.2026 09:11 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Website issues you could encounter | Polypane Polypane is really good at surfacing issues with websites. For example with our debug tools , outline panel and accessibility panel . Aโ€ฆ

When working on your own site in Polypane, you probably want to exclude your visits from your analytics tool.

We made a list of analytics tools and how do to that directly in Polypane or in their settings. If your analytics tool isn't listed, let us know!

polypane.app/docs/website...

11.02.2026 09:11 ๐Ÿ‘ 4 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Immediately mesmerized on open ๐Ÿ˜

10.02.2026 17:52 ๐Ÿ‘ 11 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1