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
Pinned
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, the…
polypane.app
Polypane 28 is here!
This first release of 2026 comes with plenty of improvements to Projects, the new Environments feature prevents you from confusing production for localhost, the Elements panel is faster and more powerful than ever, and it now runs on Chromium 146.
polypane.app/blog/polypan...
This first release of 2026 comes with plenty of improvements to Projects, the new Environments feature prevents you from confusing production for localhost, the Elements panel is faster and more powerful than ever, and it now runs on Chromium 146.
polypane.app/blog/polypan...
Reposted by Polypane. For devs who care
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-...
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-...
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 to…
polypane.app
February 12, 2026 at 12:58 PM
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-...
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-...
Reposted by Polypane. For devs who care
Polypane 28: Project Improvements, Elements Panel Updates, and Chromium 146, by @polypane.app:
https://polypane.app/blog/polypane-28-project-improvements-elements-panel-updates-and-chromium-146/
#releasenotes #polypane #browsers
https://polypane.app/blog/polypane-28-project-improvements-elements-panel-updates-and-chromium-146/
#releasenotes #polypane #browsers
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, the…
polypane.app
February 13, 2026 at 8:30 AM
Polypane 28: Project Improvements, Elements Panel Updates, and Chromium 146, by @polypane.app:
https://polypane.app/blog/polypane-28-project-improvements-elements-panel-updates-and-chromium-146/
#releasenotes #polypane #browsers
https://polypane.app/blog/polypane-28-project-improvements-elements-panel-updates-and-chromium-146/
#releasenotes #polypane #browsers
Reposted by Polypane. For devs who care
Great release 💯 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.
Polypane 28 is here!
This first release of 2026 comes with plenty of improvements to Projects, the new Environments feature prevents you from confusing production for localhost, the Elements panel is faster and more powerful than ever, and it now runs on Chromium 146.
polypane.app/blog/polypan...
This first release of 2026 comes with plenty of improvements to Projects, the new Environments feature prevents you from confusing production for localhost, the Elements panel is faster and more powerful than ever, and it now runs on Chromium 146.
polypane.app/blog/polypan...
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, the…
polypane.app
February 12, 2026 at 10:34 PM
Great release 💯 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.
Reposted by Polypane. For devs who care
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.
One of the many things that takes dozens of steps in other browsers that takes two clicks in Polypane.
February 11, 2026 at 9:18 AM
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.
One of the many things that takes dozens of steps in other browsers that takes two clicks in Polypane.
Reposted by Polypane. For devs who care
Don't have chrome canary with experimental platform features set up?
Don't worry, also works like a charm in @polypane.app ;)
Don't worry, also works like a charm in @polypane.app ;)
🚀Do we like scroll-driven animations? yes! Do we want scroll-triggered animations? Also yes! Would it be cool to combine them? Ow hell yes! And that's just what I did in this year's Valentine's article, enjoy! ❤️❤️
It's quite lengthy, but also contains some hot tips 🔥
utilitybend.com/blog/css-ani...
It's quite lengthy, but also contains some hot tips 🔥
utilitybend.com/blog/css-ani...
CSS Animation Triggers: Playing animations on scroll without scrubbing. It's a match! | utilitybend
CSS scroll-triggered animations let you use scroll position to determine when animations play. Combined with scroll-driven animations for the perfect scrollytelling experience. A Valentine's special.
utilitybend.com
February 12, 2026 at 10:54 AM
Don't have chrome canary with experimental platform features set up?
Don't worry, also works like a charm in @polypane.app ;)
Don't worry, also works like a charm in @polypane.app ;)
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-...
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-...
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 to…
polypane.app
February 12, 2026 at 12:58 PM
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-...
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-...
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 🙏
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 🙏
February 11, 2026 at 3:52 PM
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 🙏
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 🙏
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.
One of the many things that takes dozens of steps in other browsers that takes two clicks in Polypane.
February 11, 2026 at 9:18 AM
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.
One of the many things that takes dozens of steps in other browsers that takes two clicks in Polypane.
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...
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...
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 . A…
polypane.app
February 11, 2026 at 9:11 AM
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...
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...
Reposted by Polypane. For devs who care
Immediately mesmerized on open 😍
February 10, 2026 at 5:52 PM
Immediately mesmerized on open 😍
Reposted by Polypane. For devs who care
It's magical when products feel tailor made for you and "just work", that's how I'd describe Polypane.
It's the vibe I strive for with Be Inclusive too, so being able to easily jump from one to the other now is a full circle moment for me, so proud!
#SotB26 is 2 weeks out, get your tickets ASAP!
It's the vibe I strive for with Be Inclusive too, so being able to easily jump from one to the other now is a full circle moment for me, so proud!
#SotB26 is 2 weeks out, get your tickets ASAP!
If you do any sort of accessibility auditing then
1. Polypane and Be Inclusive are now a killer combo for your productivity
2. You should probably get a ticket to SotB, They're sold out in person but still have online tickets available.
1. Polypane and Be Inclusive are now a killer combo for your productivity
2. You should probably get a ticket to SotB, They're sold out in person but still have online tickets available.
Our #SotB26 supporter @beinclusive.app is now integrated with @polypane.app
polypane.app/blog/polypan...
polypane.app/blog/polypan...
February 10, 2026 at 5:34 PM
It's magical when products feel tailor made for you and "just work", that's how I'd describe Polypane.
It's the vibe I strive for with Be Inclusive too, so being able to easily jump from one to the other now is a full circle moment for me, so proud!
#SotB26 is 2 weeks out, get your tickets ASAP!
It's the vibe I strive for with Be Inclusive too, so being able to easily jump from one to the other now is a full circle moment for me, so proud!
#SotB26 is 2 weeks out, get your tickets ASAP!
Polypane 28 is here!
This first release of 2026 comes with plenty of improvements to Projects, the new Environments feature prevents you from confusing production for localhost, the Elements panel is faster and more powerful than ever, and it now runs on Chromium 146.
polypane.app/blog/polypan...
This first release of 2026 comes with plenty of improvements to Projects, the new Environments feature prevents you from confusing production for localhost, the Elements panel is faster and more powerful than ever, and it now runs on Chromium 146.
polypane.app/blog/polypan...
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, the…
polypane.app
February 10, 2026 at 11:16 AM
Polypane 28 is here!
This first release of 2026 comes with plenty of improvements to Projects, the new Environments feature prevents you from confusing production for localhost, the Elements panel is faster and more powerful than ever, and it now runs on Chromium 146.
polypane.app/blog/polypan...
This first release of 2026 comes with plenty of improvements to Projects, the new Environments feature prevents you from confusing production for localhost, the Elements panel is faster and more powerful than ever, and it now runs on Chromium 146.
polypane.app/blog/polypan...
Reposted by Polypane. For devs who care
Did you know we wrote a deep dive on offset parents and stacking context? Two essential concepts when it comes to positioning in all three dimensions.
They're hard to debug, but not with Polypane! Contexts are just listed in our elements panel, easy peasy.
Read here: polypane.app/blog/offset-...
They're hard to debug, but not with Polypane! Contexts are just listed in our elements panel, easy peasy.
Read here: polypane.app/blog/offset-...
January 29, 2026 at 8:29 AM
Did you know we wrote a deep dive on offset parents and stacking context? Two essential concepts when it comes to positioning in all three dimensions.
They're hard to debug, but not with Polypane! Contexts are just listed in our elements panel, easy peasy.
Read here: polypane.app/blog/offset-...
They're hard to debug, but not with Polypane! Contexts are just listed in our elements panel, easy peasy.
Read here: polypane.app/blog/offset-...
Reposted by Polypane. For devs who care
Understanding the Fundamentals of CSS Layout, by @polypane.app:
https://polypane.app/blog/understanding-the-fundamentals-of-css-layout/
#fundamentals #css #layout #grids #flexbox
https://polypane.app/blog/understanding-the-fundamentals-of-css-layout/
#fundamentals #css #layout #grids #flexbox
Understanding the fundamentals of CSS Layout | Polypane
When developers say that CSS is hard, they're usually talking about CSS layout. What often gets omitted though is that developers are assumed to understand and…
polypane.app
February 6, 2026 at 9:30 PM
Understanding the Fundamentals of CSS Layout, by @polypane.app:
https://polypane.app/blog/understanding-the-fundamentals-of-css-layout/
#fundamentals #css #layout #grids #flexbox
https://polypane.app/blog/understanding-the-fundamentals-of-css-layout/
#fundamentals #css #layout #grids #flexbox
Reposted by Polypane. For devs who care
This edition is kindly sponsored by
@polypane.app 🫶
The CSS Selection already contained several links to Polypane, even before I decided to accept sponsors. Having @kilianvalkhof.com contact me felt like puzzle pieces coming together. Super stoked and proud!
@polypane.app 🫶
The CSS Selection already contained several links to Polypane, even before I decided to accept sponsors. Having @kilianvalkhof.com contact me felt like puzzle pieces coming together. Super stoked and proud!
February 6, 2026 at 10:33 AM
This edition is kindly sponsored by
@polypane.app 🫶
The CSS Selection already contained several links to Polypane, even before I decided to accept sponsors. Having @kilianvalkhof.com contact me felt like puzzle pieces coming together. Super stoked and proud!
@polypane.app 🫶
The CSS Selection already contained several links to Polypane, even before I decided to accept sponsors. Having @kilianvalkhof.com contact me felt like puzzle pieces coming together. Super stoked and proud!
Reposted by Polypane. For devs who care
Announcing The CSS Selection!
📰 www.projectwallace.com/the-css-sele...
📚 100,000 websites
⏱️ 100+ metrics
🔖 7 chapters
The biggest deep-dive ever into real-world use of CSS across the globe. Dive in and find out some hidden gems. Also, see how much of 'the new CSS' is actually used!
📰 www.projectwallace.com/the-css-sele...
📚 100,000 websites
⏱️ 100+ metrics
🔖 7 chapters
The biggest deep-dive ever into real-world use of CSS across the globe. Dive in and find out some hidden gems. Also, see how much of 'the new CSS' is actually used!
The CSS Selection - 2026 Edition - Project Wallace
The CSS Selection shows real-world CSS usage from over 100,000 websites and looks at the most important metrics.
www.projectwallace.com
February 6, 2026 at 10:08 AM
Announcing The CSS Selection!
📰 www.projectwallace.com/the-css-sele...
📚 100,000 websites
⏱️ 100+ metrics
🔖 7 chapters
The biggest deep-dive ever into real-world use of CSS across the globe. Dive in and find out some hidden gems. Also, see how much of 'the new CSS' is actually used!
📰 www.projectwallace.com/the-css-sele...
📚 100,000 websites
⏱️ 100+ metrics
🔖 7 chapters
The biggest deep-dive ever into real-world use of CSS across the globe. Dive in and find out some hidden gems. Also, see how much of 'the new CSS' is actually used!
Reposted by Polypane. For devs who care
Our upcoming release has some nice improvements to our form inspector, but did you know we also have a free online form inspector?
Paste in your HTML to get an overview of your form's structure to find issues and make improvements polypane.app/form-inspect...
Paste in your HTML to get an overview of your form's structure to find issues and make improvements polypane.app/form-inspect...
HTML Form inspector | Polypane
Paste your HTML form code to get a detailed overview of its structure and fields.
polypane.app
February 5, 2026 at 10:52 AM
Our upcoming release has some nice improvements to our form inspector, but did you know we also have a free online form inspector?
Paste in your HTML to get an overview of your form's structure to find issues and make improvements polypane.app/form-inspect...
Paste in your HTML to get an overview of your form's structure to find issues and make improvements polypane.app/form-inspect...
Our upcoming release has some nice improvements to our form inspector, but did you know we also have a free online form inspector?
Paste in your HTML to get an overview of your form's structure to find issues and make improvements polypane.app/form-inspect...
Paste in your HTML to get an overview of your form's structure to find issues and make improvements polypane.app/form-inspect...
HTML Form inspector | Polypane
Paste your HTML form code to get a detailed overview of its structure and fields.
polypane.app
February 5, 2026 at 10:52 AM
Our upcoming release has some nice improvements to our form inspector, but did you know we also have a free online form inspector?
Paste in your HTML to get an overview of your form's structure to find issues and make improvements polypane.app/form-inspect...
Paste in your HTML to get an overview of your form's structure to find issues and make improvements polypane.app/form-inspect...
We can't wait for the inaugural CSS Selection to be released!
align-content: home-stretch!
Working on the last few bits so this beast can be released on Friday!
🫶🫶 Shoutout to @polypane.app for making this first edition possible. Imagine having incorporated several links to Polypane in the content already, and then @kilianvalkhof.com stepping up. 🫶🫶
Working on the last few bits so this beast can be released on Friday!
🫶🫶 Shoutout to @polypane.app for making this first edition possible. Imagine having incorporated several links to Polypane in the content already, and then @kilianvalkhof.com stepping up. 🫶🫶
February 4, 2026 at 1:22 PM
We can't wait for the inaugural CSS Selection to be released!
If you are experiencing hardship, frustration and lack of qualitative feedback during your day-to-day web development activities, it is our professional recommendation that you
Polypane that shit (assuming some of it is UI related)
February 4, 2026 at 11:10 AM
If you are experiencing hardship, frustration and lack of qualitative feedback during your day-to-day web development activities, it is our professional recommendation that you
Reposted by Polypane. For devs who care
As promised on my previous post. If you work in web dev, get this tool!
Just improved my web dev workflow by getting a @polypane.app subscription! 🥳 🔥 🤩 polypane.app
Just improved my web dev workflow by getting a @polypane.app subscription! 🥳 🔥 🤩 polypane.app
Polypane. The missing half of your web development environment.
A development browser for professional web developers. Build and test responsive, accessible websites with multi-viewport previews and accessibility tooling.
polypane.app
February 3, 2026 at 1:02 PM
As promised on my previous post. If you work in web dev, get this tool!
Just improved my web dev workflow by getting a @polypane.app subscription! 🥳 🔥 🤩 polypane.app
Just improved my web dev workflow by getting a @polypane.app subscription! 🥳 🔥 🤩 polypane.app
Reposted by Polypane. For devs who care
@polypane.app is amazing.
I got the trial a couple days ago and it's already helped me fix a bug that's been on my backlog for weeks, and it was something that only happened on certain mobile devices I don't own to test on.
It was a breeze fixing it today.
I am definitely purchasing a license now.
I got the trial a couple days ago and it's already helped me fix a bug that's been on my backlog for weeks, and it was something that only happened on certain mobile devices I don't own to test on.
It was a breeze fixing it today.
I am definitely purchasing a license now.
February 3, 2026 at 12:03 PM
@polypane.app is amazing.
I got the trial a couple days ago and it's already helped me fix a bug that's been on my backlog for weeks, and it was something that only happened on certain mobile devices I don't own to test on.
It was a breeze fixing it today.
I am definitely purchasing a license now.
I got the trial a couple days ago and it's already helped me fix a bug that's been on my backlog for weeks, and it was something that only happened on certain mobile devices I don't own to test on.
It was a breeze fixing it today.
I am definitely purchasing a license now.
Reposted by Polypane. For devs who care
Very cool, and very easy to play with in the upcoming Polypane release ;)
February 2, 2026 at 2:25 PM
Very cool, and very easy to play with in the upcoming Polypane release ;)
Do you use Polypane to check for Accessibility? Jules Ernst maintains an overview of which WCAG SCs Polypane helps with, and he just updated it with all the latest features in Polypane.
An invaluable resource, thanks Jules!
www.200ok.nl/tips/polypan...
An invaluable resource, thanks Jules!
www.200ok.nl/tips/polypan...
Polypane and WCAG - 200 OK - Jules Ernst
Jules Ernst, onafhankelijk webadviseur
www.200ok.nl
February 2, 2026 at 12:29 PM
Do you use Polypane to check for Accessibility? Jules Ernst maintains an overview of which WCAG SCs Polypane helps with, and he just updated it with all the latest features in Polypane.
An invaluable resource, thanks Jules!
www.200ok.nl/tips/polypan...
An invaluable resource, thanks Jules!
www.200ok.nl/tips/polypan...
Reposted by Polypane. For devs who care
Buy @polypane.app !
Comes with a specialty wood shaver that can only shave with the grain of the web.
January 30, 2026 at 9:08 PM
Buy @polypane.app !