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
Control all browsers on any device from inside Polypane. Synchronised interactions, Inspect and Edit styles, get console output.
All without a single line of configuration.
All without a single line of configuration.
January 9, 2026 at 1:21 PM
Control all browsers on any device from inside Polypane. Synchronised interactions, Inspect and Edit styles, get console output.
All without a single line of configuration.
All without a single line of configuration.
1. Open your Portal on any other device or browser
2. Add a snippet
3. Activate it
Snippets now run in any device you have connected to Polypane portal.
2. Add a snippet
3. Activate it
Snippets now run in any device you have connected to Polypane portal.
December 17, 2025 at 12:22 PM
1. Open your Portal on any other device or browser
2. Add a snippet
3. Activate it
Snippets now run in any device you have connected to Polypane portal.
2. Add a snippet
3. Activate it
Snippets now run in any device you have connected to Polypane portal.
Coming soon: navigate the elements panel tree using your arrow keys.
The custom-built Polypane elements panel lets you inspect and edit Elements across all viewports in one go.
The custom-built Polypane elements panel lets you inspect and edit Elements across all viewports in one go.
December 5, 2025 at 10:20 AM
Coming soon: navigate the elements panel tree using your arrow keys.
The custom-built Polypane elements panel lets you inspect and edit Elements across all viewports in one go.
The custom-built Polypane elements panel lets you inspect and edit Elements across all viewports in one go.
Here's a cool photo that Polypane user Marcos sent us recently.
He has a Logitech Creative Console all decked out to quickly switch workspaces, layouts and to reload or open the command bar for more advances tasks. Such a nice productivity boost!
Should we make available a set of icons to use?
He has a Logitech Creative Console all decked out to quickly switch workspaces, layouts and to reload or open the command bar for more advances tasks. Such a nice productivity boost!
Should we make available a set of icons to use?
October 27, 2025 at 4:30 PM
Here's a cool photo that Polypane user Marcos sent us recently.
He has a Logitech Creative Console all decked out to quickly switch workspaces, layouts and to reload or open the command bar for more advances tasks. Such a nice productivity boost!
Should we make available a set of icons to use?
He has a Logitech Creative Console all decked out to quickly switch workspaces, layouts and to reload or open the command bar for more advances tasks. Such a nice productivity boost!
Should we make available a set of icons to use?
Looking for our logo, icon or other brand assets? Right-click the logo on the site to find our brand kit!
October 15, 2025 at 11:49 AM
Looking for our logo, icon or other brand assets? Right-click the logo on the site to find our brand kit!
Kilian is at Frontmania today to speak about the INTL API! Make sure to grab the magazine for a cool article about Polypane and ask Kilian for some stickers!
October 8, 2025 at 8:07 AM
Kilian is at Frontmania today to speak about the INTL API! Make sure to grab the magazine for a cool article about Polypane and ask Kilian for some stickers!
New in Polypane 26: all our devices emulate the correct `safe-area-inset-*` CSS environment variables, as well as the correct small viewport height.
Toggle the visualization from the emulation settings to see where they're located. Like browser UI the svh overlay scrolls away when you scroll down.
Toggle the visualization from the emulation settings to see where they're located. Like browser UI the svh overlay scrolls away when you scroll down.
October 1, 2025 at 2:34 PM
New in Polypane 26: all our devices emulate the correct `safe-area-inset-*` CSS environment variables, as well as the correct small viewport height.
Toggle the visualization from the emulation settings to see where they're located. Like browser UI the svh overlay scrolls away when you scroll down.
Toggle the visualization from the emulation settings to see where they're located. Like browser UI the svh overlay scrolls away when you scroll down.
We're proud to add two new awards to our ever-growing list. This time we're recognised as Category leaders by GetApp and we're on the Capterra shortlist, both for (web) app development 🙌
See all our awards at polypane.app/accolades/
See all our awards at polypane.app/accolades/
July 21, 2025 at 9:26 AM
We're proud to add two new awards to our ever-growing list. This time we're recognised as Category leaders by GetApp and we're on the Capterra shortlist, both for (web) app development 🙌
See all our awards at polypane.app/accolades/
See all our awards at polypane.app/accolades/
Here's a fun thing we snuck into the latest patch release: support for HTML comments in the elements panel!
Check out this lovely ASCII art on @sjoy.lol's website :)
Check out this lovely ASCII art on @sjoy.lol's website :)
July 9, 2025 at 3:37 PM
Here's a fun thing we snuck into the latest patch release: support for HTML comments in the elements panel!
Check out this lovely ASCII art on @sjoy.lol's website :)
Check out this lovely ASCII art on @sjoy.lol's website :)
Not every feature needs to be large to be useful.
Our target size tooling detects interactive elements that don't follow WCAG, Google Mobile Friendliness or Apple HIG guidelines. But sometimes that element might be behind our UI.
So in Polypane 25 we added a quick toggle to move it out of the way!
Our target size tooling detects interactive elements that don't follow WCAG, Google Mobile Friendliness or Apple HIG guidelines. But sometimes that element might be behind our UI.
So in Polypane 25 we added a quick toggle to move it out of the way!
July 2, 2025 at 3:39 PM
Not every feature needs to be large to be useful.
Our target size tooling detects interactive elements that don't follow WCAG, Google Mobile Friendliness or Apple HIG guidelines. But sometimes that element might be behind our UI.
So in Polypane 25 we added a quick toggle to move it out of the way!
Our target size tooling detects interactive elements that don't follow WCAG, Google Mobile Friendliness or Apple HIG guidelines. But sometimes that element might be behind our UI.
So in Polypane 25 we added a quick toggle to move it out of the way!
Our updated icon will feel right at home with Liquid Glass in light, dark and mono.
June 14, 2025 at 8:11 AM
Our updated icon will feel right at home with Liquid Glass in light, dark and mono.
We like sweating the details.
Did you know for example that the Polypane Elements panel suggests CSS properties not alphabetically, but based on most common usage?
So when you type "c" you get "color", not "caption-side" and when you type "f" you get "font-size", not "fill".
Did you know for example that the Polypane Elements panel suggests CSS properties not alphabetically, but based on most common usage?
So when you type "c" you get "color", not "caption-side" and when you type "f" you get "font-size", not "fill".
May 14, 2025 at 8:02 AM
We like sweating the details.
Did you know for example that the Polypane Elements panel suggests CSS properties not alphabetically, but based on most common usage?
So when you type "c" you get "color", not "caption-side" and when you type "f" you get "font-size", not "fill".
Did you know for example that the Polypane Elements panel suggests CSS properties not alphabetically, but based on most common usage?
So when you type "c" you get "color", not "caption-side" and when you type "f" you get "font-size", not "fill".
Our rulers are getting a new measuring overlay.
Drag and measure an overlaid rectangle that show its dimensions and the distance to edges. Snaps to your guides while dragging.
Or use it as a selection to screenshot a specific area of the page.
Try it in our upcoming release!
Drag and measure an overlaid rectangle that show its dimensions and the distance to edges. Snaps to your guides while dragging.
Or use it as a selection to screenshot a specific area of the page.
Try it in our upcoming release!
May 13, 2025 at 1:15 PM
Our rulers are getting a new measuring overlay.
Drag and measure an overlaid rectangle that show its dimensions and the distance to edges. Snaps to your guides while dragging.
Or use it as a selection to screenshot a specific area of the page.
Try it in our upcoming release!
Drag and measure an overlaid rectangle that show its dimensions and the distance to edges. Snaps to your guides while dragging.
Or use it as a selection to screenshot a specific area of the page.
Try it in our upcoming release!
We have Widevine DRM support in Polypane! Here's a screenshot of @netflix.com running in Polypane to prove it 😏
Yes, it's a black rectangle. The DRM works!
But trust me, I could see and hear Jamie Oliver. You can too, in the next full release.
Yes, it's a black rectangle. The DRM works!
But trust me, I could see and hear Jamie Oliver. You can too, in the next full release.
April 28, 2025 at 7:36 AM
We have Widevine DRM support in Polypane! Here's a screenshot of @netflix.com running in Polypane to prove it 😏
Yes, it's a black rectangle. The DRM works!
But trust me, I could see and hear Jamie Oliver. You can too, in the next full release.
Yes, it's a black rectangle. The DRM works!
But trust me, I could see and hear Jamie Oliver. You can too, in the next full release.
Wanna hide some social media previews, or maybe just change the way they're sorted so the one you care about most is on top?
We got you.
We got you.
April 23, 2025 at 2:12 PM
Wanna hide some social media previews, or maybe just change the way they're sorted so the one you care about most is on top?
We got you.
We got you.
Edit HTML directly from the elements panel, and Polypane will update your HTML in-place to maintain any event listeners you have attached to the DOM you just edited!
April 23, 2025 at 2:12 PM
Edit HTML directly from the elements panel, and Polypane will update your HTML in-place to maintain any event listeners you have attached to the DOM you just edited!
Need to debug a difficult z-indexing or stacking context issue? Turn on the 3D view to quickly see what's going on ...or to take a peek behind the curtain!
April 23, 2025 at 2:12 PM
Need to debug a difficult z-indexing or stacking context issue? Turn on the 3D view to quickly see what's going on ...or to take a peek behind the curtain!
And then when you're done, you can quickly trim, cut and annotate your video before exporting and sharing it.
April 23, 2025 at 2:12 PM
And then when you're done, you can quickly trim, cut and annotate your video before exporting and sharing it.
Some of the features, starting with video recording.
When you record a pane, we show a custom cursor that makes it easier to follow where your cursor is moving, and it also highlights clicks.
When you record a pane, we show a custom cursor that makes it easier to follow where your cursor is moving, and it also highlights clicks.
April 23, 2025 at 2:12 PM
Some of the features, starting with video recording.
When you record a pane, we show a custom cursor that makes it easier to follow where your cursor is moving, and it also highlights clicks.
When you record a pane, we show a custom cursor that makes it easier to follow where your cursor is moving, and it also highlights clicks.
I slept on it and the interaction where it just always followed the mouse didn't feel great. So now it's drag'n'drop and it's so much nicer.
Ever seen the back of a webpage?
Ever seen the back of a webpage?
April 10, 2025 at 8:01 AM
I slept on it and the interaction where it just always followed the mouse didn't feel great. So now it's drag'n'drop and it's so much nicer.
Ever seen the back of a webpage?
Ever seen the back of a webpage?
Coming soon: a new debug tool that transforms your page into a 3d view showing the elements that create new stacking contexts and have a specified z-index value.
The page remains fully interactive, click to toggle the 3d rotation for when you want to focus or interact.
The page remains fully interactive, click to toggle the 3d rotation for when you want to focus or interact.
April 9, 2025 at 2:20 PM
Coming soon: a new debug tool that transforms your page into a 3d view showing the elements that create new stacking contexts and have a specified z-index value.
The page remains fully interactive, click to toggle the 3d rotation for when you want to focus or interact.
The page remains fully interactive, click to toggle the 3d rotation for when you want to focus or interact.
Tomorrow (April 9th) is CSS Naked Day. Are you ready? css-naked-day.org
April 8, 2025 at 2:06 PM
Tomorrow (April 9th) is CSS Naked Day. Are you ready? css-naked-day.org
We're continuously adding more linting across Polypane to help you build better websites.
In the upcoming release we'll automatically warn you when you're trying to add an accessible name to an element that doesn't support one.
In the upcoming release we'll automatically warn you when you're trying to add an accessible name to an element that doesn't support one.
March 28, 2025 at 9:41 AM
We're continuously adding more linting across Polypane to help you build better websites.
In the upcoming release we'll automatically warn you when you're trying to add an accessible name to an element that doesn't support one.
In the upcoming release we'll automatically warn you when you're trying to add an accessible name to an element that doesn't support one.
If you’re at Frontrunners DC today, come check out our table!
Get a free 60 day trial, grab some stickers and try some authentic Dutch licorice before @kilianvalkhof.com eats it all!
Get a free 60 day trial, grab some stickers and try some authentic Dutch licorice before @kilianvalkhof.com eats it all!
March 21, 2025 at 12:42 PM
If you’re at Frontrunners DC today, come check out our table!
Get a free 60 day trial, grab some stickers and try some authentic Dutch licorice before @kilianvalkhof.com eats it all!
Get a free 60 day trial, grab some stickers and try some authentic Dutch licorice before @kilianvalkhof.com eats it all!
...we got told to do better.
Color coded tabs ✅
Color coded tabs ✅
March 13, 2025 at 3:44 PM
...we got told to do better.
Color coded tabs ✅
Color coded tabs ✅