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-...

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

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.

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.

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

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 🙏

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.

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...

Immediately mesmerized on open 😍

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!

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...

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-...

Understanding the Fundamentals of CSS Layout, by @polypane.app: https://polypane.app/blog/understanding-the-fundamentals-of-css-layout/ #fundamentals #css #layout #grids #flexbox

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!

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!

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...

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...

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

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

@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.

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...

Buy @polypane.app !

I just got Polypane again yesterday, and I am so grateful it exists. Now paid for by Factorial.io so, no more pausing my subscription :) 🙌

Just improved my web dev workflow by getting a @polypane.app subscription! 🥳 🔥 🤩 polypane.app

Any post that starts off with the rule of least power is bound to be a good one. @pawelgrzybek.com shows how you can create custom invoker commands by listening to the command event, greatly simplifying interactivity. For predefined commands you don't even need JS! pawelgrzybek.com/more-invoker...

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-...

New year, new badges! Like previous years, in 2026 Polypane is also a Software Advice Frontrunner and Shortlisted on Capterra due to the outstanding user reviews (By you! Thank you!!)

Whoo!

From our archives. Forced color mode explained 1 in 25 site visitors using windows have a (high) contrast mode enabled, overwriting all your sites colors. Here's how to design, debug and test for it, even if you don't own a Windows device. polypane.app/blog/forced-...

From our archives. Forced color mode explained 1 in 25 site visitors using windows have a (high) contrast mode enabled, overwriting all your sites colors. Here's how to design, debug and test for it, even if you don't own a Windows device. polypane.app/blog/forced-...

Thrilled with the responses to this beast of an article that I've gotten so far. Just wanna throw it out there that it's based on a conference talk and that I would love to give at more conferences (or meetups!). If you're looking for speakers on this topic, please reach out :)

Understanding the fundamentals of CSS layout When devs say that CSS is hard, they're usually talking about CSS layout. What often gets omitted is that developers are assumed to understand and effectively use CSS without being taught how it works in the first place. polypane.app/blog/underst...

I could sing the praises of @polypane.app forever 🤩 I made use of this nifty 'Head order' tool today as I went on my quest to understand and wrangle the stuff in my <head>. Such a great visualization to fix things up! (Mine looks like the sorted order now) More info: polypane.app/docs/meta-in...

Understanding the fundamentals of CSS layout When devs say that CSS is hard, they're usually talking about CSS layout. What often gets omitted is that developers are assumed to understand and effectively use CSS without being taught how it works in the first place. polypane.app/blog/underst...

Coming soon on the blog!

Not All Browser APIs Are “Web” APIs, by @polypane.app: https://polypane.app/blog/not-all-browser-apis-are-web-apis/ #apis

Someone notified us that our security.txt file was expired, so in the next update Polypane will check the date and give you a warning if it's in the past. ✅

Something I did a while back but just noticed I never linked to it from a11y-tools home page: a GitHub repo for PolyPane workspaces geared to accessibility testing: 👉 github.com/lloydi/PolyP... You might not be aware of these and find them useful 😊 #testing #tools #accessibility #a11y #polypane

Friends don’t let friends ship horizontal scrollbars.

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...

"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/

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...

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

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...

📣 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...

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...

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...