fidzu : thunderbird

WebDriver is a remote control interface that enables introspection and control of user agents. As such, it can help developers to verify that their websites are working and performing well with all major browsers. The protocol is standardized by the W3C and consists of two separate specifications: WebDriver classic (HTTP) and the new WebDriver BiDi (Bi-Directional).

This newsletter gives an overview of the work we've done as part of the Firefox 153 release cycle.

Contributions

Firefox is an open source project, and we are always happy to receive external code contributions to our WebDriver implementation. We want to give special thanks to everyone who filed issues, bugs and submitted patches.

Firefox 153, multiple WebDriver bugs were fixed by contributors:

• Khalid AlHaddad updated our codebase to use constants instead of hard-coded strings for all our session data types.
• Khalid AlHaddad improved the window manipulation commands in Marionette and WebDriver BiDi to allow individual window geometry properties, such as x, y, width, and height, to be adjusted independently.
• Sameem updated the "Take Element Screenshot" command from WebDriver Classic to crop screenshots of elements which exceed the viewport. This aligns with the specification and avoids errors when attempting to capture huge elements.

WebDriver code is written in JavaScript, Python, and Rust so any web developer can contribute! Read how to setup the work environment and check the list of mentored issues for Marionette, or the list of mentored JavaScript bugs for WebDriver BiDi. Join our chatroom if you need any help to get started!

All Changes

A complete list of developer-facing changes included in this Firefox release is available in the MDN Firefox 153 Release Notes.

21 Jul 2026 8:18pm GMT

Tabs pile up fast on mobile. Imagine you're planning a summer barbecue, and you start by searching for the best rib recipe. Twenty minutes later, you're 17 tabs deep: comparing marinades, debating side dishes, checking the weather, making a grocery list and adding songs to a playlist.

None of those tabs are organized. They're mixed in with everything else you've been browsing, making it hard to keep track of what you're saving for later.

Now you can group related tabs in Firefox for Android, keeping them together in labeled, colored groups so you can actually find what you need when you need it.

How it works

Drag one tab onto another, or select a few and tap "Add to group." Name it, pick a color, and you're done.

Each group appears as a single card in the tab tray rather than a dozen separate tabs. You can open it, rename it, recolor it, or delete it whenever you want. Search still finds tabs inside a group, too.

So when you're standing in the produce aisle looking for that rib recipe, you won't have to scroll past dozens of unrelated tabs just to find it. Everything for your barbecue is organized together in one place, ready when you need it.

Finally sorted, as it should be

Tab grouping was the most requested feature from Firefox mobile users in 2025. And we get it: your tabs shouldn't get harder to manage the more you use your browser. Download the latest version of Firefox for Android now to try Tab Groups, with iOS support on the way.

The post Your Android tabs just got a lot more organized with Firefox appeared first on The Mozilla Blog.

21 Jul 2026 4:00pm GMT

You're planning a trip. Reading an article. Following a recipe.

Then a question pops into your head. Sometimes it leads down a rabbit hole - with more searches, more tabs and plenty to explore. Other times, you just need a little context so you can get back to what you were doing.

That's why we're introducing Quick Answers for Firefox on iOS.

With Quick Answers, you can ask a question using your voice and get a concise answer. Just open a new tab, long-press the voice button and ask.

For example:

• "What does mellifluous mean?"
• "What is 95 degrees Fahrenheit in Celsius?"
• "What's the difference between suede and nubuck?"

If a quick answer is all you need, you're done.

If you want to dig in deeper, the links to supporting sources are there for exploration.

Built with transparency and privacy in mind

We've built Quick Answers to be transparent about how it works and what data is shared.

Voice is processed on your device using Apple's speech recognition technology. No raw audio is stored or sent to the server, and Firefox doesn't share your browsing history or personal context with the AI model. Only the transcribed text of your question is sent to generate an answer. You can turn the feature off at any time in Settings → AI Controls.

Quick Answers is starting to roll out today to Firefox for iOS users in the U.S. using English.

Oh, and if you're wondering…

• Mellifluous means pleasant and musical to hear.
• 95 degrees Fahrenheit is 35 degrees Celsius.
• Suede is made from the underside of the hide, while nubuck is made from the outer side and buffed to create a soft, velvety texture.

The post Quick Answers: For the questions in between appeared first on The Mozilla Blog.

21 Jul 2026 4:00pm GMT