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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Polypane 27.1: Expanding Portal | Polypane
Polypane 27.1 is here and Polypane Portal has expanded! The Polypane console will now show the console messages from all connected browsers so you get instant…
polypane.app
Our last release of the year (no promises) is out!
Polypane 27.1 supercharges Portals with console and snippet support, adds a ton of new features to projects and the elements panel and boosts performance due to smarter outline parsing.
polypane.app/blog/polypan...
Polypane 27.1 supercharges Portals with console and snippet support, adds a ton of new features to projects and the elements panel and boosts performance due to smarter outline parsing.
polypane.app/blog/polypan...
Reposted by Polypane. For devs who care
Not All Browser APIs Are "Web" APIs
There's JS APIs in your browser that are little more than facades for cloud services. You might be sending your users' data to them.
polypane.app/blog/not-all...
There's JS APIs in your browser that are little more than facades for cloud services. You might be sending your users' data to them.
polypane.app/blog/not-all...
Not All Browser APIs Are "Web" APIs | Polypane
When we talk about "the web platform", we often treat it as a unified, standards-based system: browsers implement features from the same specifications, even if…
polypane.app
January 9, 2026 at 10:50 AM
Not All Browser APIs Are "Web" APIs
There's JS APIs in your browser that are little more than facades for cloud services. You might be sending your users' data to them.
polypane.app/blog/not-all...
There's JS APIs in your browser that are little more than facades for cloud services. You might be sending your users' data to them.
polypane.app/blog/not-all...
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.
"Public portals has proven to be a powerful tool which actually got me excited about remote debugging, which is otherwise the worst kind of debugging"
Absolutely *no one* likes debugging the weird bug that only happens on that one device you don't own. Portal makes it easy. polypane.app/portal/
Absolutely *no one* likes debugging the weird bug that only happens on that one device you don't own. Portal makes it easy. polypane.app/portal/
Polypane Portal | Polypane
Polypane Portal shares your local development environment with anyone, anywhere, on any device while keeping everything in sync.
polypane.app
January 9, 2026 at 1:17 PM
"Public portals has proven to be a powerful tool which actually got me excited about remote debugging, which is otherwise the worst kind of debugging"
Absolutely *no one* likes debugging the weird bug that only happens on that one device you don't own. Portal makes it easy. polypane.app/portal/
Absolutely *no one* likes debugging the weird bug that only happens on that one device you don't own. Portal makes it easy. polypane.app/portal/
Not All Browser APIs Are "Web" APIs
There's JS APIs in your browser that are little more than facades for cloud services. You might be sending your users' data to them.
polypane.app/blog/not-all...
There's JS APIs in your browser that are little more than facades for cloud services. You might be sending your users' data to them.
polypane.app/blog/not-all...
Not All Browser APIs Are "Web" APIs | Polypane
When we talk about "the web platform", we often treat it as a unified, standards-based system: browsers implement features from the same specifications, even if…
polypane.app
January 9, 2026 at 10:50 AM
Not All Browser APIs Are "Web" APIs
There's JS APIs in your browser that are little more than facades for cloud services. You might be sending your users' data to them.
polypane.app/blog/not-all...
There's JS APIs in your browser that are little more than facades for cloud services. You might be sending your users' data to them.
polypane.app/blog/not-all...
Reposted by Polypane. For devs who care
built a Wrapped-style Highlights microsite for a few thousand customers with Astro + Netlify edge functions, @gsap-greensock.bsky.social ScrollTrigger + Observer, Cloudinary image transformations for social sharing and a whole lotta vanilla JS- @polypane.app came clutch for QA
January 7, 2026 at 4:03 PM
built a Wrapped-style Highlights microsite for a few thousand customers with Astro + Netlify edge functions, @gsap-greensock.bsky.social ScrollTrigger + Observer, Cloudinary image transformations for social sharing and a whole lotta vanilla JS- @polypane.app came clutch for QA
Reposted by Polypane. For devs who care
By the way did you know @polypane.app has a full-blown XML viewer built in? Because of course it does.
polypane.app/docs/json-an...
polypane.app/docs/json-an...
JSON and XML viewer | Polypane
When you open a JSON or XML file in Polypane (either from a URL, or as a .json/.xml file on disk) it is shown in a viewer that shows the…
polypane.app
January 7, 2026 at 9:07 AM
By the way did you know @polypane.app has a full-blown XML viewer built in? Because of course it does.
polypane.app/docs/json-an...
polypane.app/docs/json-an...
Reposted by Polypane. For devs who care
📣 The finale of What the Spec?! is here 🥳
We wrap season 1 with @kilianvalkhof.com & discuss the ins and outs of building an indie browser!!
Available on your fav podcast app & RSS.
Apple: apple.co/3KR1du4
Spotify: open.spotify.com/episode/7uwM...
Transcript: lolaslab.co/what-the-spe...
We wrap season 1 with @kilianvalkhof.com & discuss the ins and outs of building an indie browser!!
Available on your fav podcast app & RSS.
Apple: apple.co/3KR1du4
Spotify: open.spotify.com/episode/7uwM...
Transcript: lolaslab.co/what-the-spe...
December 17, 2025 at 4:50 PM
📣 The finale of What the Spec?! is here 🥳
We wrap season 1 with @kilianvalkhof.com & discuss the ins and outs of building an indie browser!!
Available on your fav podcast app & RSS.
Apple: apple.co/3KR1du4
Spotify: open.spotify.com/episode/7uwM...
Transcript: lolaslab.co/what-the-spe...
We wrap season 1 with @kilianvalkhof.com & discuss the ins and outs of building an indie browser!!
Available on your fav podcast app & RSS.
Apple: apple.co/3KR1du4
Spotify: open.spotify.com/episode/7uwM...
Transcript: lolaslab.co/what-the-spe...
Reposted by Polypane. For devs who care
Our last release of the year (no promises) is out!
Polypane 27.1 supercharges Portals with console and snippet support, adds a ton of new features to projects and the elements panel and boosts performance due to smarter outline parsing.
polypane.app/blog/polypan...
Polypane 27.1 supercharges Portals with console and snippet support, adds a ton of new features to projects and the elements panel and boosts performance due to smarter outline parsing.
polypane.app/blog/polypan...
Polypane 27.1: Expanding Portal | Polypane
Polypane 27.1 is here and Polypane Portal has expanded! The Polypane console will now show the console messages from all connected browsers so you get instant…
polypane.app
December 17, 2025 at 11:33 AM
Our last release of the year (no promises) is out!
Polypane 27.1 supercharges Portals with console and snippet support, adds a ton of new features to projects and the elements panel and boosts performance due to smarter outline parsing.
polypane.app/blog/polypan...
Polypane 27.1 supercharges Portals with console and snippet support, adds a ton of new features to projects and the elements panel and boosts performance due to smarter outline parsing.
polypane.app/blog/polypan...
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.
Our last release of the year (no promises) is out!
Polypane 27.1 supercharges Portals with console and snippet support, adds a ton of new features to projects and the elements panel and boosts performance due to smarter outline parsing.
polypane.app/blog/polypan...
Polypane 27.1 supercharges Portals with console and snippet support, adds a ton of new features to projects and the elements panel and boosts performance due to smarter outline parsing.
polypane.app/blog/polypan...
Polypane 27.1: Expanding Portal | Polypane
Polypane 27.1 is here and Polypane Portal has expanded! The Polypane console will now show the console messages from all connected browsers so you get instant…
polypane.app
December 17, 2025 at 11:33 AM
Our last release of the year (no promises) is out!
Polypane 27.1 supercharges Portals with console and snippet support, adds a ton of new features to projects and the elements panel and boosts performance due to smarter outline parsing.
polypane.app/blog/polypan...
Polypane 27.1 supercharges Portals with console and snippet support, adds a ton of new features to projects and the elements panel and boosts performance due to smarter outline parsing.
polypane.app/blog/polypan...
Reposted by Polypane. For devs who care
This is in 40 minutes, come hang out!
Looking forward to chatting with @kilianvalkhof.com from @polypane.app next week. We're going to dig into leveraging the Chrome Dev Tools MCP server with Polypane. Come hang!
www.youtube.com/watch?v=ACK8...
www.youtube.com/watch?v=ACK8...
Using Chrome DevTools MCP with Polypane
YouTube video by Nick Taylor
www.youtube.com
December 16, 2025 at 6:23 PM
This is in 40 minutes, come hang out!
We're working on SCIM support through SAML SSO.
If you know some of those words and you want to help us test this, reach out!
If you know some of those words and you want to help us test this, reach out!
December 15, 2025 at 8:34 AM
We're working on SCIM support through SAML SSO.
If you know some of those words and you want to help us test this, reach out!
If you know some of those words and you want to help us test this, reach out!
Follow along with @nickyt.online and @kilianvalkhof.com as they set up the Chrome Dev Tools MCP to work with Polypane!
Looking forward to chatting with @kilianvalkhof.com from @polypane.app next week. We're going to dig into leveraging the Chrome Dev Tools MCP server with Polypane. Come hang!
www.youtube.com/watch?v=ACK8...
www.youtube.com/watch?v=ACK8...
Using Chrome DevTools MCP with Polypane
YouTube video by Nick Taylor
www.youtube.com
December 9, 2025 at 3:01 PM
Follow along with @nickyt.online and @kilianvalkhof.com as they set up the Chrome Dev Tools MCP to work with Polypane!
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.
* rename it to ⚫ and remove the icon.
December 4, 2025 at 10:54 AM
* rename it to ⚫ and remove the icon.
Let me think about that! An option to hide it can be done. For now you can also rename the project to "⚫" and that will make it smaller and less noticeable.
Every time I tried to design a light header it didn't look good (and I'm a light mode user!) so that's maybe a longer term thing.
Every time I tried to design a light header it didn't look good (and I'm a light mode user!) so that's maybe a longer term thing.
December 4, 2025 at 10:54 AM
Let me think about that! An option to hide it can be done. For now you can also rename the project to "⚫" and that will make it smaller and less noticeable.
Every time I tried to design a light header it didn't look good (and I'm a light mode user!) so that's maybe a longer term thing.
Every time I tried to design a light header it didn't look good (and I'm a light mode user!) so that's maybe a longer term thing.
🚨Final Call🚨
The Polypane Black Friday deal ends in a few hours.
If you want to build better websites faster (and save money doing it), this is your moment.
22% off. Ends today.
👉 polypane.app/black-friday/
The Polypane Black Friday deal ends in a few hours.
If you want to build better websites faster (and save money doing it), this is your moment.
22% off. Ends today.
👉 polypane.app/black-friday/
Polypane Black Friday | Polypane
Get the browser for devs who care for 22% during our Black Friday sale. Available until December 1st.
polypane.app
December 1, 2025 at 8:23 PM
🚨Final Call🚨
The Polypane Black Friday deal ends in a few hours.
If you want to build better websites faster (and save money doing it), this is your moment.
22% off. Ends today.
👉 polypane.app/black-friday/
The Polypane Black Friday deal ends in a few hours.
If you want to build better websites faster (and save money doing it), this is your moment.
22% off. Ends today.
👉 polypane.app/black-friday/
Reposted by Polypane. For devs who care
*Last day.*
The Black Friday sale ends tonight.
Get *22% off Polypane* (Lifetime discount on yearly plans).
Go go go! 🏃 polypane.app/black-friday/
The Black Friday sale ends tonight.
Get *22% off Polypane* (Lifetime discount on yearly plans).
Go go go! 🏃 polypane.app/black-friday/
Polypane Black Friday | Polypane
Get the browser for devs who care for 22% during our Black Friday sale. Available until December 1st.
polypane.app
December 1, 2025 at 9:12 AM
*Last day.*
The Black Friday sale ends tonight.
Get *22% off Polypane* (Lifetime discount on yearly plans).
Go go go! 🏃 polypane.app/black-friday/
The Black Friday sale ends tonight.
Get *22% off Polypane* (Lifetime discount on yearly plans).
Go go go! 🏃 polypane.app/black-friday/
*Last day.*
The Black Friday sale ends tonight.
Get *22% off Polypane* (Lifetime discount on yearly plans).
Go go go! 🏃 polypane.app/black-friday/
The Black Friday sale ends tonight.
Get *22% off Polypane* (Lifetime discount on yearly plans).
Go go go! 🏃 polypane.app/black-friday/
Polypane Black Friday | Polypane
Get the browser for devs who care for 22% during our Black Friday sale. Available until December 1st.
polypane.app
December 1, 2025 at 9:12 AM
*Last day.*
The Black Friday sale ends tonight.
Get *22% off Polypane* (Lifetime discount on yearly plans).
Go go go! 🏃 polypane.app/black-friday/
The Black Friday sale ends tonight.
Get *22% off Polypane* (Lifetime discount on yearly plans).
Go go go! 🏃 polypane.app/black-friday/
Reposted by Polypane. For devs who care
Tomorrow's the last day!
After 7 years of selling courses, I'm finally doing a Black Friday sale.
I'd held off for from doing sales in general for all this time, but had some smart people get me on board with it, so I figured if I'm going to do it, I'll go big:
40% off + Flexbox Simplified for free.
I'd held off for from doing sales in general for all this time, but had some smart people get me on board with it, so I figured if I'm going to do it, I'll go big:
40% off + Flexbox Simplified for free.
November 30, 2025 at 3:40 PM
Tomorrow's the last day!
Weekend project? 🛠️
Make sure your site looks great on every screen size.
Polypane shows you mobile, tablet, and desktop viewports side-by-side. Fix a bug in one, see it fixed in all.
Grab our Friday deal this weekend:
👉 polypane.app/black-friday/
Make sure your site looks great on every screen size.
Polypane shows you mobile, tablet, and desktop viewports side-by-side. Fix a bug in one, see it fixed in all.
Grab our Friday deal this weekend:
👉 polypane.app/black-friday/
Polypane Black Friday | Polypane
Get the browser for devs who care for 22% during our Black Friday sale. Available until December 1st.
polypane.app
November 30, 2025 at 1:39 PM
Weekend project? 🛠️
Make sure your site looks great on every screen size.
Polypane shows you mobile, tablet, and desktop viewports side-by-side. Fix a bug in one, see it fixed in all.
Grab our Friday deal this weekend:
👉 polypane.app/black-friday/
Make sure your site looks great on every screen size.
Polypane shows you mobile, tablet, and desktop viewports side-by-side. Fix a bug in one, see it fixed in all.
Grab our Friday deal this weekend:
👉 polypane.app/black-friday/
Reposted by Polypane. For devs who care
110.
That’s the number of user requests we implemented in 2025 (...I might have gotten nerd-sniped into a few of them 😅).
Polypane is built *with* and *for* our community. Join us today for 22% off 👉 polypane.app/black-friday/
That’s the number of user requests we implemented in 2025 (...I might have gotten nerd-sniped into a few of them 😅).
Polypane is built *with* and *for* our community. Join us today for 22% off 👉 polypane.app/black-friday/
Polypane Black Friday | Polypane
Get the browser for devs who care for 22% during our Black Friday sale. Available until December 1st.
polypane.app
November 29, 2025 at 9:55 AM
110.
That’s the number of user requests we implemented in 2025 (...I might have gotten nerd-sniped into a few of them 😅).
Polypane is built *with* and *for* our community. Join us today for 22% off 👉 polypane.app/black-friday/
That’s the number of user requests we implemented in 2025 (...I might have gotten nerd-sniped into a few of them 😅).
Polypane is built *with* and *for* our community. Join us today for 22% off 👉 polypane.app/black-friday/
We appreciate it! You can always reach out with questions or suggestions
November 29, 2025 at 12:54 PM
We appreciate it! You can always reach out with questions or suggestions
110.
That’s the number of user requests we implemented in 2025 (...I might have gotten nerd-sniped into a few of them 😅).
Polypane is built *with* and *for* our community. Join us today for 22% off 👉 polypane.app/black-friday/
That’s the number of user requests we implemented in 2025 (...I might have gotten nerd-sniped into a few of them 😅).
Polypane is built *with* and *for* our community. Join us today for 22% off 👉 polypane.app/black-friday/
Polypane Black Friday | Polypane
Get the browser for devs who care for 22% during our Black Friday sale. Available until December 1st.
polypane.app
November 29, 2025 at 9:55 AM
110.
That’s the number of user requests we implemented in 2025 (...I might have gotten nerd-sniped into a few of them 😅).
Polypane is built *with* and *for* our community. Join us today for 22% off 👉 polypane.app/black-friday/
That’s the number of user requests we implemented in 2025 (...I might have gotten nerd-sniped into a few of them 😅).
Polypane is built *with* and *for* our community. Join us today for 22% off 👉 polypane.app/black-friday/