Launching Web Serial in Firefox 151 The web is built by communities, but not all communities use the web the same way.  That philosophy shaped part of this week’s Firefox 151 release, which introduced support for the Web Serial API on desktop. Most folks won’t use this API, but for our community of builders and […]

The post Mozilla and Adafruit bring Web Serial workflows to Firefox appeared first on The Mozilla Blog.

Crafted with care. Built for speed. Ready for what’s next. A great browser is so intuitive that you often forget you’re using it. Yet today the internet is changing faster than ever, and your browser needs to keep up. Firefox is still the only browser built for people, not platforms: independent, customizable, private and firmly […]

The post Designing Firefox for the future appeared first on The Mozilla Blog.

Update on May 19, 2026: Firefox’s free built-in VPN now supports location selection, giving people access to a fully comprehensive VPN experience directly within the browser. Starting today, Firefox users in the U.S., U.K., France, Germany, and Canada can choose to browse from any of the countries where we’ve launched VPN support.  Browsing is subject […]

The post A free VPN you can trust, now built into Firefox appeared first on The Mozilla Blog.

Today, Firefox is rolling out updates across desktop and mobile that give you more choice over how you browse. Here’s a look at what’s new. Adding location selection to Firefox’s free VPN Firefox now offers a fully featured VPN experience directly in the browser — for free. In just two months, over 1 million users […]

The post New in Firefox 151: VPN location selection, AI controls on mobile, and expanded Shake to Summarize support appeared first on The Mozilla Blog.

Mobile browsing is personal. It’s the link you open from a group chat because someone said, “Wait, is this real?” It’s the article you read in the few quiet minutes you have to yourself. It’s the review you skim before buying something you’ve been thinking about all week. On a phone, browsing follows you through […]

The post AI controls are here for Firefox mobile appeared first on The Mozilla Blog.

Don’t let bloated websites slow you down. When you just need the gist, scrolling through ads and filler content can turn a quick check into an endless scroll. Firefox’s Shake to Summarize feature solves that. We first launched it on iOS in English last September, earning a special mention in TIME’s Best Inventions of 2025 […]

The post Firefox’s Shake to Summarize expands to Android and new languages on iOS appeared first on The Mozilla Blog.

We’re delighted that Abigail Besdin has joined Mozilla as our new Chief Operating Officer. This is an incredibly exciting time for Mozilla. Our focus is to become the world’s most trusted software company by building products that let people use the internet openly, safely, and on their terms. As technology changes rapidly, we are working […]

The post Welcoming Abigail Besdin, Mozilla’s new Chief Operating Officer appeared first on The Mozilla Blog.

Mobile browsing hasn’t kept up with how people actually use their phones. Right now, even basic tasks can feel harder than they should. Finding what you need can mean scrolling through ads and filler content, keeping track of too many tabs, or thinking twice about how private your connection is. A mobile browser should do […]

The post What’s new in Firefox mobile: Less clutter, more control and a free built-in VPN appeared first on The Mozilla Blog.

Since February, the Firefox team has been working around the clock using frontier AI models to find and fix latent security vulnerabilities in the browser. We wrote previously about our collaboration with Anthropic to scan Firefox with Opus 4.6, which led to fixes for 22 security-sensitive bugs in Firefox 148. As part of our continued […]

The post The zero-days are numbered  appeared first on The Mozilla Blog.

Microsoft recently announced it’s pulling back Copilot from several of its core Windows apps — Photos, Notepad, the Snipping Tool, and Widgets. Rolling back these forced AI integrations is the right move, but this is just the most recent example of Microsoft going too far without user consent.  Copilot was pushed onto users Over the […]

The post Old habits die hard: Microsoft tries to limit our options, this time with AI appeared first on The Mozilla Blog.

We’re launching across the developer and security community this week on Product Hunt and Hacker News. If you’ve been following AI security, we’d love your support and your feedback.  At Mozilla, open source has never been just a licensing choice. It’s a conviction: the internet gets healthier when tools and knowledge circulate freely, when anyone […]

The post 0DIN is open-sourcing AI security and the hard-earned knowledge behind it appeared first on The Mozilla Blog.

The future of AI should belong to all of humanity, well beyond a handful of countries or companies. For that to happen, AI needs to be open, trusted, and built in ways that give people, institutions, and nations real choices. That’s why, today, Mozilla is announcing a strategic partnership with Mila – Quebec Artificial Intelligence Institute […]

The post Mozilla and Mila announce strategic research partnership to advance open source and sovereign AI capabilities  appeared first on The Mozilla Blog.

Don’t remember why you have all those webpages open? Now you can leave yourself a note for any tab. Tab Notes — our latest experimental feature in Firefox — are designed to help you remember, reflect, and pick up where you left off on the web by letting you attach a short note to a […]

The post Try Tab Notes in Firefox to leave a note on any page appeared first on The Mozilla Blog.

Much of what we do on the web involves looking at more than one thing at a time – booking tickets while checking your calendar, taking notes as you go through a report, or comparing options before making a purchase. The web is inherently multidimensional. For years, browsing this way meant bouncing back and forth […]

The post Split View in Firefox: Two tabs side by side, right where you need them appeared first on The Mozilla Blog.

Firefox is for people who make their own choices online, from what stays private to the tools that help get things done. That commitment to choice shows up throughout the Firefox experience, and AI controls is just the latest example — making it possible to turn generative AI features off, on, or customize them feature […]

The post More reasons to love Firefox: What’s new now, and what’s coming soon appeared first on The Mozilla Blog.

The web shouldn’t feel like it’s working against you. Yet so much of it now is designed to pull you off course: endless feeds, pop-up windows and content that looks credible until it isn’t. Staying focused and trusting your next click takes more effort than it should. Firefox is here to help you navigate the […]

The post Meet Kit, your companion for a new internet era appeared first on The Mozilla Blog.

We recently released a feature in the Firefox iOS mobile app called “Shake to Summarize”. The reception was remarkably positive, earning an honorable mention on Time Magazine’s best inventions of 2025.  For anyone unfamiliar with Shake to Summarize, it’s just what the name implies: when you’re browsing a webpage, you can shake your phone to […]

The post Under the hood: The AI powering Firefox’s Shake to Summarize appeared first on The Mozilla Blog.

The unique architecture of the web enables a much higher degree of user privacy than exists on other platforms. Many factors contribute to this, but an essential one is that you don’t need to log in to start browsing. Sharing details about yourself with a website is an optional step you can take when you […]

The post The web should remain anonymous by default appeared first on The Mozilla Blog.

For more than two decades, Firefox has been one of the most scrutinized and security-hardened codebases on the web. Open source means our code is visible, reviewable, and continuously stress-tested by a global community.  A few weeks ago, Anthropic’s Frontier Red Team approached us with results from a new AI-assisted vulnerability-detection method that surfaced more […]

The post Hardening Firefox with Anthropic’s Red Team  appeared first on The Mozilla Blog.

This is an edited transcript of an episode of Outside the Fox, Firefox’s flagship podcast, where we explore what’s happening online and why it matters. Stay up to date by subscribing on YouTube, Apple Podcasts, Spotify, or your favorite podcast app. On Outside the Fox, my co-host Kim Horcher and I spend a lot of […]

The post Ajit Varma on Firefox’s new AI controls: ‘We believe in user choice’ appeared first on The Mozilla Blog.