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Polypane 17.1 is primarily a bugfix and security release, but contains a few new features and newly supported browser extensions, as well as an updated Chromium.

What's Polypane? Polypane is the web browser for ambitious web developers. It's a stand-alone browser that shows sites in multiple fully synced panes and helps you make your site more responsive, more accessible and faster.

New Social media designs

Twitter/X updated their card design to show the title overlaid on the image and the domain below it, and Mastodon is now more lenient in the OG images it accepts. Both are now supported in Polypane.

Twitter/X card design

New browser extensions

Polypane now supports the Bitwarden password manager and the User Javascript and CSS extension.

We've added support for the chrome.tabs.getSelected API, as well as improved the way works from inside extension popups. This means that more extensions will work in Polypane.

Chromium security fixes

Polypane 17.1 contains fixes for 5 security issues and now runs Chromium 120.0.6099.216. We recommend updating as soon as possible.

Performance improvements

Hover/Blur styles

For pages with lots of JavaScript, sometimes the synced hover style would get "stuck" and not update anymore. We've improved our syncing algorithm so that no longer happens, and this has also improved the performance of the syncing.

Polypane now uses a different method to parse the accessible name of links and headings on a page, which is two orders of magnitude faster than the previous implementation. This makes the Outline panel faster but should also noticably improve performance.

If you notice any issues with the accessible naming of links or headings in the outline panel, please let us know.

Get Polypane 17.1

Polypane is available for Windows, Mac and Linux (.deb or AppImage) in both 64 bit and ARM versions.

Polypane automatically updates on Mac, Windows and on Linux when using the AppImage. Otherwise, go to the download page to download the latest version!

Don't have Polypane yet? There is a 14 day trial available. Try it for free. No credit card needed.

Polypane 17.1 Changelog


  • New Twitter/X card design
  • New Mastodon design
  • New Support for Bitwarden extension
  • New Support for User Javascript and CSS extension
  • New Chromium 120.0.6099.216


  • Improved Support for more browser extensions
  • Improved Performance for pages with many links or headings (Thanks Sascha!)
  • Improved Faster and more dependable hover and unhover syncing (Thanks Todd!)
  • Improved Console: Different styling between strings and numbers
  • Improved Console: Different styling for no return value and empty string
  • Improved Support for Vite CSS HMR (Thanks Joshua!)
  • Improved Better logic for determining canonical hostnames


  • Security Fix for CVE-2023-7024
  • Security Fix for chromium:1506535
  • Security Fix for CVE-2024-0518
  • Security Fix for CVE-2024-0517
  • Security Fix for chromium:1517354


  • Fix On first launch the detached panel would be empty
  • Fix Prevent flickering of devtools when moving to different tab on macos
  • Fix New Tab not working for some users after upgrading to 17.0.0
  • Fix Applying workspaces from the command bar now works
  • Fix Opening urls from extension on Linux
  • Fix Zoom-to-fit of individual panes would not zoom out enough
  • Fix The shortcut F8 is no longer being overwritten
  • Fix UI bug for the address bar in full mode on small widths
  • Fix Links to docs and support from the Help menu

Build your next project with Polypane

  • Use all features on all plans
  • On Mac, Window and Linux
  • 14-day free trial – no credit card needed
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Polypane UI