Browsers

Release Notes for Safari Technology Preview 220
Safari Technology Preview Release 220 is now available for download for macOS Sequoia and macOS Sonoma.
2025-05-28 21:34
A smarter, simpler Firefox address bar 
Firefox’s address bar just got an upgrade, and it’s all about putting you in control. It’s faster, easier to use and built to support how you search and browse — while staying true to what makes Firefox, Firefox: real user choice, strong privac...
2025-05-24 01:06
The most L.A. corner of the internet
Here at Mozilla, we are the first to admit the internet isn’t perfect, but we know the internet is pretty darn magical. The internet opens up doors and opportunities, allows for human connection, and lets everyone find where they belong — their cor...
2025-05-23 16:36
Investing in what moves the internet forward
Firefox is the only major browser not backed by a billionaire and our independence shapes everything we build. This independence allows us to prioritize building products and tools, which shape the future of the internet for the better. And it means we...
2025-05-22 16:00
Two lines of Cross-Document View Transitions code you can use on every website today
Arguably, the most profound thing about the web is the ability to link one page to another.
2025-05-21 14:00
The future of the web depends on getting this right
The remedies phase of the U.S. v. Google LLC search case wrapped up last week. As the Court weighs how to restore competition in the search market, Mozilla is asking it to seriously consider the unintended consequences of some of the proposed remedies,...
2025-05-16 18:02
Release Notes for Safari Technology Preview 219
Safari Technology Preview Release 219 is now available for download for macOS Sequoia and macOS Sonoma.
2025-05-14 21:37
‘Shifting left’ for better accessibility in Firefox
As a product manager for Firefox, one of the areas I’m most passionate about is accessibility. This is not only because I’m a disabled person myself, but also because I’ve seen firsthand that building in accessibility from the beginning results i...
2025-05-13 21:52
How to have the browser pick a contrasting color in CSS
Have you ever wished you could write simple CSS to declare a color, and then have the browser figure out whether black or white should be paired with that color?
2025-05-13 17:00
Jump into Firefox Labs: A place to try new features and help shape Firefox
Ever thought, “I wish I could try that new Firefox feature early?” Good news – we’ve been trying out new features and now, you can try them out, too. Firefox Labs is our space for sharing experimental features with our community before they’r...
2025-05-13 16:27
Jump into Firefox Labs: A place to try new features and help shape Firefox
Ever thought, “I wish I could try that new Firefox feature early?” Good news – we’ve been trying out new features and now, you can try them out, too. Firefox Labs is our space for sharing experimental features with our community before they’r...
2025-05-13 16:27
WebKit Features in Safari 18.5
Safari 18.5 is here, with Declarative Web Push on macOS and more.
2025-05-12 17:15
Add wide gamut P3 and alpha transparency to your color picker in HTML
Now HTML lets you create a color picker for wide gamut P3 color and for alpha transparency with two new attributes: , available today in Safari 18.4.
2025-05-07 13:00
Mozilla’s CEO discusses testimony in U.S. v. Google search case
Today, Mozilla Chief Financial Officer, Eric Muhlheim, testified in the U.S. v. Google LLC search trial, highlighting the potential impacts this case could have on small and independent browsers, and the overall ecosystem.  There are a few key themes ...
2025-05-02 16:50
Easier layout with margin-trim
If you write a lot of CSS, you are familiar with those moments when you aren’t quite sure how to accomplish what you want to accomplish.
2025-05-01 14:00
Release Notes for Safari Technology Preview 218
Safari Technology Preview Release 218 is now available for download for macOS Sequoia and macOS Sonoma.
2025-04-30 22:07
An NYC culture reporter on YouTube’s influence and the tab that got away
Here at Mozilla, we are the first to admit the internet isn’t perfect, but we know the internet is pretty darn magical. The internet opens up doors and opportunities, allows for human connection, and lets everyone find where they belong — their cor...
2025-04-30 15:00
Tackle tab overload with Firefox Tab Groups
Open a web browser and you step into a garden of forking paths — where news, messages, memes, work, learning and cat videos all compete for your attention. Every click sprouts another tab. Before you know it, your author has opened 68,000 tabs in one...
2025-04-29 18:59
You asked, we built it: Firefox tab groups are here 
What happens when 4,500 people ask for the same feature? At Firefox, we build it. Tab groups have long been the most requested idea on Mozilla Connect – our community platform – and thanks to thousands of votes, comments and passionate feedback, it...
2025-04-29 15:01
Mozilla, Eleuther AI launch toolkits to help AI builders create open datasets
Easy-to-follow guides on how to transcribe audio files into text using privacy friendly tools and how to convert different documents into a singular format. The majority of popular AI models rely on data crawled from the web, frequently without the exp...
2025-04-25 16:59