Firefox Labs
A space for testing and sharing feedback on experimental Firefox features.
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Lost all my Bookmarks.

This morning, 5 Jan 2026, I opened up my firefox browser and the first thing that came up was a new page offering to change my default page.  I tried to simply decline but it walked me through a few steps and the last one was deleting all my informat...

Tfh57 by Making moves
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  • 1 replies
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Hyprland add parameterized window names

If you run "hyprctl clients" under Wayland you get a list of currently running programs, e.g.:Window 483159871902849 -> Mozilla Firefox    ...    class: firefox    title: Mozilla Firefox    initialClass: firefox    initialTitle: Mozilla Firefox    .....

Multiline Javascript completely broken in console...

Even when opening the multiline editor the console doesn't seem to recognize the request above the current line.  Something as simple as this fails in the console window. var checkboxes = document.querySelectorAll('input[type="checkbox"]'); checkboxe...

https://www.bancosantander.es/particulares Bug

Hello, after reporting a bug in Firefox that appears to have been fixed, there is another one on the same page.When I am prompted to perform a transaction between my two accounts, I get a blank page. Only after refreshing the page do I get to the des...

I hate the tab tray redesign.

I've twice now gotten the Firefox labs experiment named something like "tab tray redesign" that makes the tabs rectangles and adds a "sync" selector up the top.I am very much not a fan. Please do not go through with it. The larger tabs mean you see l...

jpicone by Making moves
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  • 1 replies
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Topic Sections for New Tab Stories

Hi all! Karen here to pass this announcement along on behalf of my colleague Bryan (@bryanm), who's presenting a new Labs experience for you to try!  --- Hi everyone, My name is Bryan, and I’m a product manager with Firefox. I’m excited to share that...

itskaren by Community Manager
  • 3069 Views
  • 6 replies
  • 6 kudos
New Labs Experience
This corner of Connect is the place where we reach out to you with ideas! Whenever there’s an early version of a feature we’d like to share and test with you, we’ll present it as a Labs experience, and we’d love your participation in comments.Think of yourself as a playtester, but for web experiences instead of video games. We want your help to make sure we’re building in the right direction towards making our users happier. See a Labs experience that piques your interest? Please join the party and engage directly with our Firefox team in the dedicated Connect thread!
How to Participate

Give feedback and participate in meaningful conversations with the community and Mozilla employees in this playtesting forum. Here are some resources to help you get started:

  • Mozilla Employee-Hosted Discussions
  • Community Vision
  • Labs Participation Guidelines
  • Labels