Firefox 143 is here, check out what's new: ✔️ Drag tabs to pin them. Simple, effective. ✔️ Camera preview in permission dialog. No more guesswork. ✔️ Stronger Fingerprinting Protection. ✔️ Smarter Private Browsing downloads (decide to keep or auto-delete). www.firefox.com/en-US/firefo...

Interop 2026 is now open for proposals! This is your chance to tell browser-makers which well-defined, well-tested features you wish had better support across browsers. ⬇️ Here's how ⬇️ github.com/web-platform...

Forget about tab > remember tab > close tab > regret closing tab > reopen tab with cmd/ctrl+shift+t > repeat

if you don't have at least 3 random beverages on your desk and 36+ open tabs with no memory of having opened them, are you even browsing?

Imagine a world where there's only one brand of car. Yeah... not great. That’s basically what’s happening with your browser. Let’s do a deep dive 👇1/7

Yay! It's the first Firefox release since I've joined the team, so let's take a look at some of the new developer-facing features in Firefox 142… 🧵

Firefox 142 is out. Still not the answer to life, the universe, and everything… …but it will fix your tab groups 😌

Who do you trust outside the algorithm? For Substack writer and internet decoder Ochuko, the answer is simple: her group chats. Today’s #dailydefiance challenge: Check your chats before your feed 👀 mozillasidebar.substack.com/p/gen-z-algo...

Most people just use the browser that came with their device but hear us out… What if you didn’t ? This month we'll be posting about small acts of daily defiance that help us take back control. Share yours with #dailydefiance and we'll RP our faves 🔥

@firefox.com send tab to device feature is so very useful. For example: get a text message on phone with link to "follow my delivery" UPS tracking. Open link on mobile firefox, hit share, and send to desktop instance of firefox. Kudos to firefox team for that one!

it's your friendly neighborhood internet fox reminding you that adblockers still work over here 🔥

Our idea of fun: open-source everything and curling up around a globe

"you look happier." thanks, we stopped accepting the default and life has never been better 🔥

"what's your favorite horror movie?" oh we don't know, maybe when we had 89 open tabs and we couldn't find which one was playing audio 😭

firefox 141 tabs sort themselves address bar knows math linux builds less hungry autofill expanded to 🇧🇷 🇪🇸 🇯🇵 just browser

"why can't you concentrate?" maybe because our nervous system is in a group chat with 14 browser tabs and 3 slack channels 🫠 blog.mozilla.org/en/firefox/m...

Hey Bluesky friends, what kind of content would you like to see more of on our page? 🤔

Pro tip: if you’re using vertical tabs, turn on “expand sidebar on hover” you're welcome

Bet you didn't know that we speak over 400 languages 😌 all thanks to thousands of volunteer localizers around the world who make Firefox feel like home blog.mozilla.org/en/firefox/f...

Accidentally opened the same tab 7 times? Right-click any tab → choose "close duplicate tab" and boom 🔥

🤖 Not that I would want a AI-chatbot inside the browser, but I am very thankful atleast they would let me pick what service I would like. More companies would adopt this strategy if they where consumer first. Thanks @firefox.com

Multi account containers for the win because mixing work tabs with 3am rabbit-hole browsing tabs is a recipe for disaster 😅

New week, new Firefox theme. Head over to tools → add-ons & themes → choose a theme that matches your mood 🔥

We're not saying we opened 6 tabs for flights and snacks while writing this blog... but we're also not not saying that 😅https://blog.mozilla.org/en/firefox/travel-features/

New Firefox alert! • Resize pinned vertical tabs for a cleaner, quicker view • Hide the extensions shortcut for a cleaner toolbar. Still accessible via the menu. • Unload tabs by right-clicking to free up memory & boost performance 📄 Full release notes www.mozilla.org/en-US/firefo...

A tab group for local journalism, another for burrito rankings. A well-balanced browser. @lataco.bsky.social gets it mozillasidebar.substack.com/p/the-most-l...

just a reminder: Firefox for Android supports over 1,000 extensions 🔥

Firefox isn’t the default. It’s a choice that says you believe in an open web.

hmmm interesting 🤔

A Haiku: You deserve better You should download Firefox now Five more syllables

Our address bar just got smarter. Run commands, search your tabs, switch engines, and clear your history all without leaving the bar.

Found: the quirky chatbot lost since the '80s… because sometimes the internet remembers cool stuff. More curious reads if your feed needs a boost👇 open.substack.com/pub/mozillas...

psssst every time you browse online you can support an open web by using Firefox 🔥

and we're just firing up 🔥

What's your favorite Firefox feature (and is it tab groups 👀)

Custom wallpapers. Link previews. Tab control. Try experimental features straight from your browser settings 🔥 blog.mozilla.org/en/firefox/f...

When you accidentally close a tab, simply use “Command+Shift+T” to reopen it. This feature can be repeated for previously closed tabs, but let’s be honest... do you really NEED all of them?

Testing now: Firefox profiles. Built with accessibility in mind, better for everyone. Try it early 👇 blog.mozilla.org/en/firefox/s...

Does anyone change browser themes based on their current mood or is that just us??

It's true! Spread the news 🔥

It's world password day... time to update that pw you've had since highschool (you know who you are)

Turns out when 4,500 of you ask for something it actually comes to life... Tab groups are here 🫶 blog.mozilla.org/en/firefox/t...

We can't believe a fox started this fire 🔥

Did you know we have an experimental features menu? 👀 It's called Firefox Labs. You can test features in development, give feedback and help shape what's next.

If you haven't already, you should really explore a different browser of your computer and mobile devices. I'd suggest @firefox.com or a fork of FireFox.

Not all heroes wear capes. Some: ✔️ Mod the chaos ✔️ Bring up AI bias at brunch ✔️ Won’t rest until tabs are vertical, grouped, color-coded and emotionally supportive This one’s for you → mozillasidebar.substack.com/p/whos-holdi...

When you’re one of the only major browsers left not developed on chromium 🙃